diff --git a/5.6/conf/php.ini b/5.6/conf/php.ini
index 75371d2..024f358 100644
--- a/5.6/conf/php.ini
+++ b/5.6/conf/php.ini
@@ -2,7 +2,12 @@ date.timezone = Europe/Paris
 
 opcache.enable = 1
 opcache.enable_cli = 1
-opcache.memory_consumption = 128
+opcache.memory_consumption = 256
+opcache.interned_strings_buffer = 16
+opcache.max_accelerated_files = 20000
+; Files are compiled once and never checked again: restart PHP to deploy new code, or set
+; PHP_OPCACHE_VALIDATE_TIMESTAMPS=1 when the sources are mounted and edited in place.
+opcache.validate_timestamps = ${PHP_OPCACHE_VALIDATE_TIMESTAMPS}
 opcache.revalidate_freq = 0
 apc.enable_cli = On
 
diff --git a/7.1-symfony/conf/php.ini b/7.1-symfony/conf/php.ini
index 75371d2..024f358 100644
--- a/7.1-symfony/conf/php.ini
+++ b/7.1-symfony/conf/php.ini
@@ -2,7 +2,12 @@ date.timezone = Europe/Paris
 
 opcache.enable = 1
 opcache.enable_cli = 1
-opcache.memory_consumption = 128
+opcache.memory_consumption = 256
+opcache.interned_strings_buffer = 16
+opcache.max_accelerated_files = 20000
+; Files are compiled once and never checked again: restart PHP to deploy new code, or set
+; PHP_OPCACHE_VALIDATE_TIMESTAMPS=1 when the sources are mounted and edited in place.
+opcache.validate_timestamps = ${PHP_OPCACHE_VALIDATE_TIMESTAMPS}
 opcache.revalidate_freq = 0
 apc.enable_cli = On
 
diff --git a/7.1/conf/php.ini b/7.1/conf/php.ini
index 75371d2..024f358 100644
--- a/7.1/conf/php.ini
+++ b/7.1/conf/php.ini
@@ -2,7 +2,12 @@ date.timezone = Europe/Paris
 
 opcache.enable = 1
 opcache.enable_cli = 1
-opcache.memory_consumption = 128
+opcache.memory_consumption = 256
+opcache.interned_strings_buffer = 16
+opcache.max_accelerated_files = 20000
+; Files are compiled once and never checked again: restart PHP to deploy new code, or set
+; PHP_OPCACHE_VALIDATE_TIMESTAMPS=1 when the sources are mounted and edited in place.
+opcache.validate_timestamps = ${PHP_OPCACHE_VALIDATE_TIMESTAMPS}
 opcache.revalidate_freq = 0
 apc.enable_cli = On
 
diff --git a/7.2-symfony/conf/php.ini b/7.2-symfony/conf/php.ini
index 75371d2..024f358 100644
--- a/7.2-symfony/conf/php.ini
+++ b/7.2-symfony/conf/php.ini
@@ -2,7 +2,12 @@ date.timezone = Europe/Paris
 
 opcache.enable = 1
 opcache.enable_cli = 1
-opcache.memory_consumption = 128
+opcache.memory_consumption = 256
+opcache.interned_strings_buffer = 16
+opcache.max_accelerated_files = 20000
+; Files are compiled once and never checked again: restart PHP to deploy new code, or set
+; PHP_OPCACHE_VALIDATE_TIMESTAMPS=1 when the sources are mounted and edited in place.
+opcache.validate_timestamps = ${PHP_OPCACHE_VALIDATE_TIMESTAMPS}
 opcache.revalidate_freq = 0
 apc.enable_cli = On
 
diff --git a/7.2/conf/php.ini b/7.2/conf/php.ini
index 75371d2..024f358 100644
--- a/7.2/conf/php.ini
+++ b/7.2/conf/php.ini
@@ -2,7 +2,12 @@ date.timezone = Europe/Paris
 
 opcache.enable = 1
 opcache.enable_cli = 1
-opcache.memory_consumption = 128
+opcache.memory_consumption = 256
+opcache.interned_strings_buffer = 16
+opcache.max_accelerated_files = 20000
+; Files are compiled once and never checked again: restart PHP to deploy new code, or set
+; PHP_OPCACHE_VALIDATE_TIMESTAMPS=1 when the sources are mounted and edited in place.
+opcache.validate_timestamps = ${PHP_OPCACHE_VALIDATE_TIMESTAMPS}
 opcache.revalidate_freq = 0
 apc.enable_cli = On
 
diff --git a/7.3-symfony/conf/php.ini b/7.3-symfony/conf/php.ini
index 75371d2..024f358 100644
--- a/7.3-symfony/conf/php.ini
+++ b/7.3-symfony/conf/php.ini
@@ -2,7 +2,12 @@ date.timezone = Europe/Paris
 
 opcache.enable = 1
 opcache.enable_cli = 1
-opcache.memory_consumption = 128
+opcache.memory_consumption = 256
+opcache.interned_strings_buffer = 16
+opcache.max_accelerated_files = 20000
+; Files are compiled once and never checked again: restart PHP to deploy new code, or set
+; PHP_OPCACHE_VALIDATE_TIMESTAMPS=1 when the sources are mounted and edited in place.
+opcache.validate_timestamps = ${PHP_OPCACHE_VALIDATE_TIMESTAMPS}
 opcache.revalidate_freq = 0
 apc.enable_cli = On
 
diff --git a/7.3/conf/php.ini b/7.3/conf/php.ini
index 75371d2..024f358 100644
--- a/7.3/conf/php.ini
+++ b/7.3/conf/php.ini
@@ -2,7 +2,12 @@ date.timezone = Europe/Paris
 
 opcache.enable = 1
 opcache.enable_cli = 1
-opcache.memory_consumption = 128
+opcache.memory_consumption = 256
+opcache.interned_strings_buffer = 16
+opcache.max_accelerated_files = 20000
+; Files are compiled once and never checked again: restart PHP to deploy new code, or set
+; PHP_OPCACHE_VALIDATE_TIMESTAMPS=1 when the sources are mounted and edited in place.
+opcache.validate_timestamps = ${PHP_OPCACHE_VALIDATE_TIMESTAMPS}
 opcache.revalidate_freq = 0
 apc.enable_cli = On
 
diff --git a/7.4-symfony/conf/php.ini b/7.4-symfony/conf/php.ini
index 75371d2..024f358 100644
--- a/7.4-symfony/conf/php.ini
+++ b/7.4-symfony/conf/php.ini
@@ -2,7 +2,12 @@ date.timezone = Europe/Paris
 
 opcache.enable = 1
 opcache.enable_cli = 1
-opcache.memory_consumption = 128
+opcache.memory_consumption = 256
+opcache.interned_strings_buffer = 16
+opcache.max_accelerated_files = 20000
+; Files are compiled once and never checked again: restart PHP to deploy new code, or set
+; PHP_OPCACHE_VALIDATE_TIMESTAMPS=1 when the sources are mounted and edited in place.
+opcache.validate_timestamps = ${PHP_OPCACHE_VALIDATE_TIMESTAMPS}
 opcache.revalidate_freq = 0
 apc.enable_cli = On
 
diff --git a/7.4/conf/php.ini b/7.4/conf/php.ini
index 75371d2..024f358 100644
--- a/7.4/conf/php.ini
+++ b/7.4/conf/php.ini
@@ -2,7 +2,12 @@ date.timezone = Europe/Paris
 
 opcache.enable = 1
 opcache.enable_cli = 1
-opcache.memory_consumption = 128
+opcache.memory_consumption = 256
+opcache.interned_strings_buffer = 16
+opcache.max_accelerated_files = 20000
+; Files are compiled once and never checked again: restart PHP to deploy new code, or set
+; PHP_OPCACHE_VALIDATE_TIMESTAMPS=1 when the sources are mounted and edited in place.
+opcache.validate_timestamps = ${PHP_OPCACHE_VALIDATE_TIMESTAMPS}
 opcache.revalidate_freq = 0
 apc.enable_cli = On
 
diff --git a/8.0-symfony/conf/php.ini b/8.0-symfony/conf/php.ini
index 75371d2..024f358 100644
--- a/8.0-symfony/conf/php.ini
+++ b/8.0-symfony/conf/php.ini
@@ -2,7 +2,12 @@ date.timezone = Europe/Paris
 
 opcache.enable = 1
 opcache.enable_cli = 1
-opcache.memory_consumption = 128
+opcache.memory_consumption = 256
+opcache.interned_strings_buffer = 16
+opcache.max_accelerated_files = 20000
+; Files are compiled once and never checked again: restart PHP to deploy new code, or set
+; PHP_OPCACHE_VALIDATE_TIMESTAMPS=1 when the sources are mounted and edited in place.
+opcache.validate_timestamps = ${PHP_OPCACHE_VALIDATE_TIMESTAMPS}
 opcache.revalidate_freq = 0
 apc.enable_cli = On
 
diff --git a/8.0/conf/php.ini b/8.0/conf/php.ini
index 75371d2..024f358 100644
--- a/8.0/conf/php.ini
+++ b/8.0/conf/php.ini
@@ -2,7 +2,12 @@ date.timezone = Europe/Paris
 
 opcache.enable = 1
 opcache.enable_cli = 1
-opcache.memory_consumption = 128
+opcache.memory_consumption = 256
+opcache.interned_strings_buffer = 16
+opcache.max_accelerated_files = 20000
+; Files are compiled once and never checked again: restart PHP to deploy new code, or set
+; PHP_OPCACHE_VALIDATE_TIMESTAMPS=1 when the sources are mounted and edited in place.
+opcache.validate_timestamps = ${PHP_OPCACHE_VALIDATE_TIMESTAMPS}
 opcache.revalidate_freq = 0
 apc.enable_cli = On
 
diff --git a/8.1-symfony/Dockerfile b/8.1-symfony/Dockerfile
index 566bf14..d96bae6 100644
--- a/8.1-symfony/Dockerfile
+++ b/8.1-symfony/Dockerfile
@@ -2,6 +2,7 @@ FROM mlocati/php-extension-installer:latest AS php-extension-installer
 FROM php:8.1-apache
 
 ENV COMPOSER_ALLOW_SUPERUSER=1
+ENV PHP_OPCACHE_VALIDATE_TIMESTAMPS=0
 
 EXPOSE 80
 WORKDIR /app
diff --git a/8.1-symfony/conf/php.ini b/8.1-symfony/conf/php.ini
index 75371d2..024f358 100644
--- a/8.1-symfony/conf/php.ini
+++ b/8.1-symfony/conf/php.ini
@@ -2,7 +2,12 @@ date.timezone = Europe/Paris
 
 opcache.enable = 1
 opcache.enable_cli = 1
-opcache.memory_consumption = 128
+opcache.memory_consumption = 256
+opcache.interned_strings_buffer = 16
+opcache.max_accelerated_files = 20000
+; Files are compiled once and never checked again: restart PHP to deploy new code, or set
+; PHP_OPCACHE_VALIDATE_TIMESTAMPS=1 when the sources are mounted and edited in place.
+opcache.validate_timestamps = ${PHP_OPCACHE_VALIDATE_TIMESTAMPS}
 opcache.revalidate_freq = 0
 apc.enable_cli = On
 
diff --git a/8.1/Dockerfile b/8.1/Dockerfile
index 8aeee48..dd36f72 100644
--- a/8.1/Dockerfile
+++ b/8.1/Dockerfile
@@ -2,6 +2,7 @@ FROM mlocati/php-extension-installer:latest AS php-extension-installer
 FROM php:8.1-apache
 
 ENV COMPOSER_ALLOW_SUPERUSER=1
+ENV PHP_OPCACHE_VALIDATE_TIMESTAMPS=0
 
 EXPOSE 80
 WORKDIR /app
diff --git a/8.1/conf/php.ini b/8.1/conf/php.ini
index 75371d2..024f358 100644
--- a/8.1/conf/php.ini
+++ b/8.1/conf/php.ini
@@ -2,7 +2,12 @@ date.timezone = Europe/Paris
 
 opcache.enable = 1
 opcache.enable_cli = 1
-opcache.memory_consumption = 128
+opcache.memory_consumption = 256
+opcache.interned_strings_buffer = 16
+opcache.max_accelerated_files = 20000
+; Files are compiled once and never checked again: restart PHP to deploy new code, or set
+; PHP_OPCACHE_VALIDATE_TIMESTAMPS=1 when the sources are mounted and edited in place.
+opcache.validate_timestamps = ${PHP_OPCACHE_VALIDATE_TIMESTAMPS}
 opcache.revalidate_freq = 0
 apc.enable_cli = On
 
diff --git a/8.2-frankenphp-alpine/Dockerfile b/8.2-frankenphp-alpine/Dockerfile
index 0d66d7d..82dd4dd 100644
--- a/8.2-frankenphp-alpine/Dockerfile
+++ b/8.2-frankenphp-alpine/Dockerfile
@@ -9,6 +9,7 @@ HEALTHCHECK --interval=1m --timeout=3s --start-period=5s --start-interval=1s --r
 SHELL ["/bin/ash", "-o", "pipefail", "-c"]
 
 ENV COMPOSER_ALLOW_SUPERUSER=1
+ENV PHP_OPCACHE_VALIDATE_TIMESTAMPS=0
 ENV SERVER_NAME=:80
 
 # git, unzip & zip are for composer
diff --git a/8.2-frankenphp-alpine/conf/php.ini b/8.2-frankenphp-alpine/conf/php.ini
index 75371d2..024f358 100644
--- a/8.2-frankenphp-alpine/conf/php.ini
+++ b/8.2-frankenphp-alpine/conf/php.ini
@@ -2,7 +2,12 @@ date.timezone = Europe/Paris
 
 opcache.enable = 1
 opcache.enable_cli = 1
-opcache.memory_consumption = 128
+opcache.memory_consumption = 256
+opcache.interned_strings_buffer = 16
+opcache.max_accelerated_files = 20000
+; Files are compiled once and never checked again: restart PHP to deploy new code, or set
+; PHP_OPCACHE_VALIDATE_TIMESTAMPS=1 when the sources are mounted and edited in place.
+opcache.validate_timestamps = ${PHP_OPCACHE_VALIDATE_TIMESTAMPS}
 opcache.revalidate_freq = 0
 apc.enable_cli = On
 
diff --git a/8.2-frankenphp-bookworm/Dockerfile b/8.2-frankenphp-bookworm/Dockerfile
index 61d59e6..79e333b 100644
--- a/8.2-frankenphp-bookworm/Dockerfile
+++ b/8.2-frankenphp-bookworm/Dockerfile
@@ -9,6 +9,7 @@ HEALTHCHECK --interval=1m --timeout=3s --start-period=5s --start-interval=1s --r
 SHELL ["/bin/bash", "-o", "pipefail", "-c"]
 
 ENV COMPOSER_ALLOW_SUPERUSER=1
+ENV PHP_OPCACHE_VALIDATE_TIMESTAMPS=0
 ENV SERVER_NAME=:80
 
 # git, unzip & zip are for composer
diff --git a/8.2-frankenphp-bookworm/conf/php.ini b/8.2-frankenphp-bookworm/conf/php.ini
index 75371d2..024f358 100644
--- a/8.2-frankenphp-bookworm/conf/php.ini
+++ b/8.2-frankenphp-bookworm/conf/php.ini
@@ -2,7 +2,12 @@ date.timezone = Europe/Paris
 
 opcache.enable = 1
 opcache.enable_cli = 1
-opcache.memory_consumption = 128
+opcache.memory_consumption = 256
+opcache.interned_strings_buffer = 16
+opcache.max_accelerated_files = 20000
+; Files are compiled once and never checked again: restart PHP to deploy new code, or set
+; PHP_OPCACHE_VALIDATE_TIMESTAMPS=1 when the sources are mounted and edited in place.
+opcache.validate_timestamps = ${PHP_OPCACHE_VALIDATE_TIMESTAMPS}
 opcache.revalidate_freq = 0
 apc.enable_cli = On
 
diff --git a/8.2-symfony/Dockerfile b/8.2-symfony/Dockerfile
index 91a8777..711b389 100644
--- a/8.2-symfony/Dockerfile
+++ b/8.2-symfony/Dockerfile
@@ -2,6 +2,7 @@ FROM mlocati/php-extension-installer:latest AS php-extension-installer
 FROM php:8.2-apache
 
 ENV COMPOSER_ALLOW_SUPERUSER=1
+ENV PHP_OPCACHE_VALIDATE_TIMESTAMPS=0
 
 EXPOSE 80
 WORKDIR /app
diff --git a/8.2-symfony/conf/php.ini b/8.2-symfony/conf/php.ini
index 75371d2..024f358 100644
--- a/8.2-symfony/conf/php.ini
+++ b/8.2-symfony/conf/php.ini
@@ -2,7 +2,12 @@ date.timezone = Europe/Paris
 
 opcache.enable = 1
 opcache.enable_cli = 1
-opcache.memory_consumption = 128
+opcache.memory_consumption = 256
+opcache.interned_strings_buffer = 16
+opcache.max_accelerated_files = 20000
+; Files are compiled once and never checked again: restart PHP to deploy new code, or set
+; PHP_OPCACHE_VALIDATE_TIMESTAMPS=1 when the sources are mounted and edited in place.
+opcache.validate_timestamps = ${PHP_OPCACHE_VALIDATE_TIMESTAMPS}
 opcache.revalidate_freq = 0
 apc.enable_cli = On
 
diff --git a/8.2/Dockerfile b/8.2/Dockerfile
index 92c2d62..79f6b06 100644
--- a/8.2/Dockerfile
+++ b/8.2/Dockerfile
@@ -2,6 +2,7 @@ FROM mlocati/php-extension-installer:latest AS php-extension-installer
 FROM php:8.2-apache
 
 ENV COMPOSER_ALLOW_SUPERUSER=1
+ENV PHP_OPCACHE_VALIDATE_TIMESTAMPS=0
 
 EXPOSE 80
 WORKDIR /app
diff --git a/8.2/conf/php.ini b/8.2/conf/php.ini
index 75371d2..024f358 100644
--- a/8.2/conf/php.ini
+++ b/8.2/conf/php.ini
@@ -2,7 +2,12 @@ date.timezone = Europe/Paris
 
 opcache.enable = 1
 opcache.enable_cli = 1
-opcache.memory_consumption = 128
+opcache.memory_consumption = 256
+opcache.interned_strings_buffer = 16
+opcache.max_accelerated_files = 20000
+; Files are compiled once and never checked again: restart PHP to deploy new code, or set
+; PHP_OPCACHE_VALIDATE_TIMESTAMPS=1 when the sources are mounted and edited in place.
+opcache.validate_timestamps = ${PHP_OPCACHE_VALIDATE_TIMESTAMPS}
 opcache.revalidate_freq = 0
 apc.enable_cli = On
 
diff --git a/8.3-frankenphp-alpine/Dockerfile b/8.3-frankenphp-alpine/Dockerfile
index 6aa3101..17b9150 100644
--- a/8.3-frankenphp-alpine/Dockerfile
+++ b/8.3-frankenphp-alpine/Dockerfile
@@ -9,6 +9,7 @@ HEALTHCHECK --interval=1m --timeout=3s --start-period=5s --start-interval=1s --r
 SHELL ["/bin/ash", "-o", "pipefail", "-c"]
 
 ENV COMPOSER_ALLOW_SUPERUSER=1
+ENV PHP_OPCACHE_VALIDATE_TIMESTAMPS=0
 ENV SERVER_NAME=:80
 
 # git, unzip & zip are for composer
diff --git a/8.3-frankenphp-alpine/conf/php.ini b/8.3-frankenphp-alpine/conf/php.ini
index 75371d2..024f358 100644
--- a/8.3-frankenphp-alpine/conf/php.ini
+++ b/8.3-frankenphp-alpine/conf/php.ini
@@ -2,7 +2,12 @@ date.timezone = Europe/Paris
 
 opcache.enable = 1
 opcache.enable_cli = 1
-opcache.memory_consumption = 128
+opcache.memory_consumption = 256
+opcache.interned_strings_buffer = 16
+opcache.max_accelerated_files = 20000
+; Files are compiled once and never checked again: restart PHP to deploy new code, or set
+; PHP_OPCACHE_VALIDATE_TIMESTAMPS=1 when the sources are mounted and edited in place.
+opcache.validate_timestamps = ${PHP_OPCACHE_VALIDATE_TIMESTAMPS}
 opcache.revalidate_freq = 0
 apc.enable_cli = On
 
diff --git a/8.3-frankenphp-bookworm/Dockerfile b/8.3-frankenphp-bookworm/Dockerfile
index 548112b..f586d8e 100644
--- a/8.3-frankenphp-bookworm/Dockerfile
+++ b/8.3-frankenphp-bookworm/Dockerfile
@@ -9,6 +9,7 @@ HEALTHCHECK --interval=1m --timeout=3s --start-period=5s --start-interval=1s --r
 SHELL ["/bin/bash", "-o", "pipefail", "-c"]
 
 ENV COMPOSER_ALLOW_SUPERUSER=1
+ENV PHP_OPCACHE_VALIDATE_TIMESTAMPS=0
 ENV SERVER_NAME=:80
 
 # git, unzip & zip are for composer
diff --git a/8.3-frankenphp-bookworm/conf/php.ini b/8.3-frankenphp-bookworm/conf/php.ini
index 75371d2..024f358 100644
--- a/8.3-frankenphp-bookworm/conf/php.ini
+++ b/8.3-frankenphp-bookworm/conf/php.ini
@@ -2,7 +2,12 @@ date.timezone = Europe/Paris
 
 opcache.enable = 1
 opcache.enable_cli = 1
-opcache.memory_consumption = 128
+opcache.memory_consumption = 256
+opcache.interned_strings_buffer = 16
+opcache.max_accelerated_files = 20000
+; Files are compiled once and never checked again: restart PHP to deploy new code, or set
+; PHP_OPCACHE_VALIDATE_TIMESTAMPS=1 when the sources are mounted and edited in place.
+opcache.validate_timestamps = ${PHP_OPCACHE_VALIDATE_TIMESTAMPS}
 opcache.revalidate_freq = 0
 apc.enable_cli = On
 
diff --git a/8.3-symfony/Dockerfile b/8.3-symfony/Dockerfile
index 2833d4f..1a70538 100644
--- a/8.3-symfony/Dockerfile
+++ b/8.3-symfony/Dockerfile
@@ -2,6 +2,7 @@ FROM mlocati/php-extension-installer:latest AS php-extension-installer
 FROM php:8.3-apache
 
 ENV COMPOSER_ALLOW_SUPERUSER=1
+ENV PHP_OPCACHE_VALIDATE_TIMESTAMPS=0
 
 EXPOSE 80
 WORKDIR /app
diff --git a/8.3-symfony/conf/php.ini b/8.3-symfony/conf/php.ini
index 75371d2..024f358 100644
--- a/8.3-symfony/conf/php.ini
+++ b/8.3-symfony/conf/php.ini
@@ -2,7 +2,12 @@ date.timezone = Europe/Paris
 
 opcache.enable = 1
 opcache.enable_cli = 1
-opcache.memory_consumption = 128
+opcache.memory_consumption = 256
+opcache.interned_strings_buffer = 16
+opcache.max_accelerated_files = 20000
+; Files are compiled once and never checked again: restart PHP to deploy new code, or set
+; PHP_OPCACHE_VALIDATE_TIMESTAMPS=1 when the sources are mounted and edited in place.
+opcache.validate_timestamps = ${PHP_OPCACHE_VALIDATE_TIMESTAMPS}
 opcache.revalidate_freq = 0
 apc.enable_cli = On
 
diff --git a/8.3/Dockerfile b/8.3/Dockerfile
index 09c734b..6ff10db 100644
--- a/8.3/Dockerfile
+++ b/8.3/Dockerfile
@@ -2,6 +2,7 @@ FROM mlocati/php-extension-installer:latest AS php-extension-installer
 FROM php:8.3-apache
 
 ENV COMPOSER_ALLOW_SUPERUSER=1
+ENV PHP_OPCACHE_VALIDATE_TIMESTAMPS=0
 
 EXPOSE 80
 WORKDIR /app
diff --git a/8.3/conf/php.ini b/8.3/conf/php.ini
index 75371d2..024f358 100644
--- a/8.3/conf/php.ini
+++ b/8.3/conf/php.ini
@@ -2,7 +2,12 @@ date.timezone = Europe/Paris
 
 opcache.enable = 1
 opcache.enable_cli = 1
-opcache.memory_consumption = 128
+opcache.memory_consumption = 256
+opcache.interned_strings_buffer = 16
+opcache.max_accelerated_files = 20000
+; Files are compiled once and never checked again: restart PHP to deploy new code, or set
+; PHP_OPCACHE_VALIDATE_TIMESTAMPS=1 when the sources are mounted and edited in place.
+opcache.validate_timestamps = ${PHP_OPCACHE_VALIDATE_TIMESTAMPS}
 opcache.revalidate_freq = 0
 apc.enable_cli = On
 
diff --git a/8.4-frankenphp-alpine/Dockerfile b/8.4-frankenphp-alpine/Dockerfile
index 272101d..0bc7949 100644
--- a/8.4-frankenphp-alpine/Dockerfile
+++ b/8.4-frankenphp-alpine/Dockerfile
@@ -9,6 +9,7 @@ HEALTHCHECK --interval=1m --timeout=3s --start-period=5s --start-interval=1s --r
 SHELL ["/bin/ash", "-o", "pipefail", "-c"]
 
 ENV COMPOSER_ALLOW_SUPERUSER=1
+ENV PHP_OPCACHE_VALIDATE_TIMESTAMPS=0
 ENV SERVER_NAME=:80
 
 # git, unzip & zip are for composer
diff --git a/8.4-frankenphp-alpine/conf/php.ini b/8.4-frankenphp-alpine/conf/php.ini
index 75371d2..024f358 100644
--- a/8.4-frankenphp-alpine/conf/php.ini
+++ b/8.4-frankenphp-alpine/conf/php.ini
@@ -2,7 +2,12 @@ date.timezone = Europe/Paris
 
 opcache.enable = 1
 opcache.enable_cli = 1
-opcache.memory_consumption = 128
+opcache.memory_consumption = 256
+opcache.interned_strings_buffer = 16
+opcache.max_accelerated_files = 20000
+; Files are compiled once and never checked again: restart PHP to deploy new code, or set
+; PHP_OPCACHE_VALIDATE_TIMESTAMPS=1 when the sources are mounted and edited in place.
+opcache.validate_timestamps = ${PHP_OPCACHE_VALIDATE_TIMESTAMPS}
 opcache.revalidate_freq = 0
 apc.enable_cli = On
 
diff --git a/8.4-frankenphp-bookworm/Dockerfile b/8.4-frankenphp-bookworm/Dockerfile
index 584ccd7..30eae62 100644
--- a/8.4-frankenphp-bookworm/Dockerfile
+++ b/8.4-frankenphp-bookworm/Dockerfile
@@ -9,6 +9,7 @@ HEALTHCHECK --interval=1m --timeout=3s --start-period=5s --start-interval=1s --r
 SHELL ["/bin/bash", "-o", "pipefail", "-c"]
 
 ENV COMPOSER_ALLOW_SUPERUSER=1
+ENV PHP_OPCACHE_VALIDATE_TIMESTAMPS=0
 ENV SERVER_NAME=:80
 
 # git, unzip & zip are for composer
diff --git a/8.4-frankenphp-bookworm/conf/php.ini b/8.4-frankenphp-bookworm/conf/php.ini
index 75371d2..024f358 100644
--- a/8.4-frankenphp-bookworm/conf/php.ini
+++ b/8.4-frankenphp-bookworm/conf/php.ini
@@ -2,7 +2,12 @@ date.timezone = Europe/Paris
 
 opcache.enable = 1
 opcache.enable_cli = 1
-opcache.memory_consumption = 128
+opcache.memory_consumption = 256
+opcache.interned_strings_buffer = 16
+opcache.max_accelerated_files = 20000
+; Files are compiled once and never checked again: restart PHP to deploy new code, or set
+; PHP_OPCACHE_VALIDATE_TIMESTAMPS=1 when the sources are mounted and edited in place.
+opcache.validate_timestamps = ${PHP_OPCACHE_VALIDATE_TIMESTAMPS}
 opcache.revalidate_freq = 0
 apc.enable_cli = On
 
diff --git a/8.4-symfony/Dockerfile b/8.4-symfony/Dockerfile
index 4ce18dd..a63d72a 100644
--- a/8.4-symfony/Dockerfile
+++ b/8.4-symfony/Dockerfile
@@ -2,6 +2,7 @@ FROM mlocati/php-extension-installer:latest AS php-extension-installer
 FROM php:8.4-apache
 
 ENV COMPOSER_ALLOW_SUPERUSER=1
+ENV PHP_OPCACHE_VALIDATE_TIMESTAMPS=0
 
 EXPOSE 80
 WORKDIR /app
diff --git a/8.4-symfony/conf/php.ini b/8.4-symfony/conf/php.ini
index 75371d2..024f358 100644
--- a/8.4-symfony/conf/php.ini
+++ b/8.4-symfony/conf/php.ini
@@ -2,7 +2,12 @@ date.timezone = Europe/Paris
 
 opcache.enable = 1
 opcache.enable_cli = 1
-opcache.memory_consumption = 128
+opcache.memory_consumption = 256
+opcache.interned_strings_buffer = 16
+opcache.max_accelerated_files = 20000
+; Files are compiled once and never checked again: restart PHP to deploy new code, or set
+; PHP_OPCACHE_VALIDATE_TIMESTAMPS=1 when the sources are mounted and edited in place.
+opcache.validate_timestamps = ${PHP_OPCACHE_VALIDATE_TIMESTAMPS}
 opcache.revalidate_freq = 0
 apc.enable_cli = On
 
diff --git a/8.4/Dockerfile b/8.4/Dockerfile
index 4158b2b..ea03941 100644
--- a/8.4/Dockerfile
+++ b/8.4/Dockerfile
@@ -2,6 +2,7 @@ FROM mlocati/php-extension-installer:latest AS php-extension-installer
 FROM php:8.4-apache
 
 ENV COMPOSER_ALLOW_SUPERUSER=1
+ENV PHP_OPCACHE_VALIDATE_TIMESTAMPS=0
 
 EXPOSE 80
 WORKDIR /app
diff --git a/8.4/conf/php.ini b/8.4/conf/php.ini
index 75371d2..024f358 100644
--- a/8.4/conf/php.ini
+++ b/8.4/conf/php.ini
@@ -2,7 +2,12 @@ date.timezone = Europe/Paris
 
 opcache.enable = 1
 opcache.enable_cli = 1
-opcache.memory_consumption = 128
+opcache.memory_consumption = 256
+opcache.interned_strings_buffer = 16
+opcache.max_accelerated_files = 20000
+; Files are compiled once and never checked again: restart PHP to deploy new code, or set
+; PHP_OPCACHE_VALIDATE_TIMESTAMPS=1 when the sources are mounted and edited in place.
+opcache.validate_timestamps = ${PHP_OPCACHE_VALIDATE_TIMESTAMPS}
 opcache.revalidate_freq = 0
 apc.enable_cli = On
 
diff --git a/8.5-frankenphp-alpine/Dockerfile b/8.5-frankenphp-alpine/Dockerfile
index f892271..cb0ba1d 100644
--- a/8.5-frankenphp-alpine/Dockerfile
+++ b/8.5-frankenphp-alpine/Dockerfile
@@ -9,6 +9,7 @@ HEALTHCHECK --interval=1m --timeout=3s --start-period=5s --start-interval=1s --r
 SHELL ["/bin/ash", "-o", "pipefail", "-c"]
 
 ENV COMPOSER_ALLOW_SUPERUSER=1
+ENV PHP_OPCACHE_VALIDATE_TIMESTAMPS=0
 ENV SERVER_NAME=:80
 
 # git, unzip & zip are for composer
diff --git a/8.5-frankenphp-alpine/conf/php.ini b/8.5-frankenphp-alpine/conf/php.ini
index 75371d2..024f358 100644
--- a/8.5-frankenphp-alpine/conf/php.ini
+++ b/8.5-frankenphp-alpine/conf/php.ini
@@ -2,7 +2,12 @@ date.timezone = Europe/Paris
 
 opcache.enable = 1
 opcache.enable_cli = 1
-opcache.memory_consumption = 128
+opcache.memory_consumption = 256
+opcache.interned_strings_buffer = 16
+opcache.max_accelerated_files = 20000
+; Files are compiled once and never checked again: restart PHP to deploy new code, or set
+; PHP_OPCACHE_VALIDATE_TIMESTAMPS=1 when the sources are mounted and edited in place.
+opcache.validate_timestamps = ${PHP_OPCACHE_VALIDATE_TIMESTAMPS}
 opcache.revalidate_freq = 0
 apc.enable_cli = On
 
diff --git a/8.5-frankenphp-bookworm/Dockerfile b/8.5-frankenphp-bookworm/Dockerfile
index cda22ba..f266ee9 100644
--- a/8.5-frankenphp-bookworm/Dockerfile
+++ b/8.5-frankenphp-bookworm/Dockerfile
@@ -9,6 +9,7 @@ HEALTHCHECK --interval=1m --timeout=3s --start-period=5s --start-interval=1s --r
 SHELL ["/bin/bash", "-o", "pipefail", "-c"]
 
 ENV COMPOSER_ALLOW_SUPERUSER=1
+ENV PHP_OPCACHE_VALIDATE_TIMESTAMPS=0
 ENV SERVER_NAME=:80
 
 # git, unzip & zip are for composer
diff --git a/8.5-frankenphp-bookworm/conf/php.ini b/8.5-frankenphp-bookworm/conf/php.ini
index 75371d2..024f358 100644
--- a/8.5-frankenphp-bookworm/conf/php.ini
+++ b/8.5-frankenphp-bookworm/conf/php.ini
@@ -2,7 +2,12 @@ date.timezone = Europe/Paris
 
 opcache.enable = 1
 opcache.enable_cli = 1
-opcache.memory_consumption = 128
+opcache.memory_consumption = 256
+opcache.interned_strings_buffer = 16
+opcache.max_accelerated_files = 20000
+; Files are compiled once and never checked again: restart PHP to deploy new code, or set
+; PHP_OPCACHE_VALIDATE_TIMESTAMPS=1 when the sources are mounted and edited in place.
+opcache.validate_timestamps = ${PHP_OPCACHE_VALIDATE_TIMESTAMPS}
 opcache.revalidate_freq = 0
 apc.enable_cli = On
 
diff --git a/8.5-symfony/Dockerfile b/8.5-symfony/Dockerfile
index b7887b4..b302cbf 100644
--- a/8.5-symfony/Dockerfile
+++ b/8.5-symfony/Dockerfile
@@ -2,6 +2,7 @@ FROM mlocati/php-extension-installer:latest AS php-extension-installer
 FROM php:8.5-apache
 
 ENV COMPOSER_ALLOW_SUPERUSER=1
+ENV PHP_OPCACHE_VALIDATE_TIMESTAMPS=0
 
 EXPOSE 80
 WORKDIR /app
diff --git a/8.5-symfony/conf/php.ini b/8.5-symfony/conf/php.ini
index 75371d2..024f358 100644
--- a/8.5-symfony/conf/php.ini
+++ b/8.5-symfony/conf/php.ini
@@ -2,7 +2,12 @@ date.timezone = Europe/Paris
 
 opcache.enable = 1
 opcache.enable_cli = 1
-opcache.memory_consumption = 128
+opcache.memory_consumption = 256
+opcache.interned_strings_buffer = 16
+opcache.max_accelerated_files = 20000
+; Files are compiled once and never checked again: restart PHP to deploy new code, or set
+; PHP_OPCACHE_VALIDATE_TIMESTAMPS=1 when the sources are mounted and edited in place.
+opcache.validate_timestamps = ${PHP_OPCACHE_VALIDATE_TIMESTAMPS}
 opcache.revalidate_freq = 0
 apc.enable_cli = On
 
diff --git a/8.5/Dockerfile b/8.5/Dockerfile
index f5ea7e1..14fd0d5 100644
--- a/8.5/Dockerfile
+++ b/8.5/Dockerfile
@@ -2,6 +2,7 @@ FROM mlocati/php-extension-installer:latest AS php-extension-installer
 FROM php:8.5-apache
 
 ENV COMPOSER_ALLOW_SUPERUSER=1
+ENV PHP_OPCACHE_VALIDATE_TIMESTAMPS=0
 
 EXPOSE 80
 WORKDIR /app
diff --git a/8.5/conf/php.ini b/8.5/conf/php.ini
index 75371d2..024f358 100644
--- a/8.5/conf/php.ini
+++ b/8.5/conf/php.ini
@@ -2,7 +2,12 @@ date.timezone = Europe/Paris
 
 opcache.enable = 1
 opcache.enable_cli = 1
-opcache.memory_consumption = 128
+opcache.memory_consumption = 256
+opcache.interned_strings_buffer = 16
+opcache.max_accelerated_files = 20000
+; Files are compiled once and never checked again: restart PHP to deploy new code, or set
+; PHP_OPCACHE_VALIDATE_TIMESTAMPS=1 when the sources are mounted and edited in place.
+opcache.validate_timestamps = ${PHP_OPCACHE_VALIDATE_TIMESTAMPS}
 opcache.revalidate_freq = 0
 apc.enable_cli = On
 
diff --git a/README.md b/README.md
index 81c20b2..424b2dd 100644
--- a/README.md
+++ b/README.md
@@ -68,3 +68,11 @@ These tags were last pushed on 2024-12-19. They are not part of the CI matrix an
 - **Symfony (`X.Y-symfony`)**: Enhanced images with additional extensions for Symfony applications (intl, zip)
 - **FrankenPHP Alpine (`X.Y-frankenphp-alpine`)**: Alpine-based images using FrankenPHP server for modern PHP apps
 - **FrankenPHP Bookworm (`X.Y-frankenphp-bookworm`)**: Debian-based images using FrankenPHP server for modern PHP apps
+
+## Configuration
+
+PHP settings of the Apache and FrankenPHP images live in `conf/php.ini` (installed as `conf.d/app.ini`).
+
+| Environment variable | Default | Effect |
+|----------------------|---------|--------|
+| `PHP_OPCACHE_VALIDATE_TIMESTAMPS` | `0` | `opcache.validate_timestamps`. With `0`, PHP files are compiled once and never checked for changes: restart the container to deploy new code. Set it to `1` when the sources are mounted and edited in place (local development). |
diff --git a/_shared/conf/php.ini b/_shared/conf/php.ini
index 75371d2..024f358 100644
--- a/_shared/conf/php.ini
+++ b/_shared/conf/php.ini
@@ -2,7 +2,12 @@ date.timezone = Europe/Paris
 
 opcache.enable = 1
 opcache.enable_cli = 1
-opcache.memory_consumption = 128
+opcache.memory_consumption = 256
+opcache.interned_strings_buffer = 16
+opcache.max_accelerated_files = 20000
+; Files are compiled once and never checked again: restart PHP to deploy new code, or set
+; PHP_OPCACHE_VALIDATE_TIMESTAMPS=1 when the sources are mounted and edited in place.
+opcache.validate_timestamps = ${PHP_OPCACHE_VALIDATE_TIMESTAMPS}
 opcache.revalidate_freq = 0
 apc.enable_cli = On