diff --git a/12.0/apache/Dockerfile b/12.0/apache/Dockerfile
index 8519c73a..338de7a1 100644
--- a/12.0/apache/Dockerfile
+++ b/12.0/apache/Dockerfile
@@ -89,6 +89,8 @@ RUN { \
     \
     echo 'apc.enable_cli=1' >> /usr/local/etc/php/conf.d/docker-php-ext-apcu.ini; \
     \
+    echo 'memory_limit=512M' > /usr/local/etc/php/conf.d/memory-limit.ini; \
+    \
     mkdir /var/www/data; \
     chown -R www-data:root /var/www; \
     chmod -R g=u /var/www
diff --git a/12.0/fpm-alpine/Dockerfile b/12.0/fpm-alpine/Dockerfile
index daf1f5ff..3d2be28c 100644
--- a/12.0/fpm-alpine/Dockerfile
+++ b/12.0/fpm-alpine/Dockerfile
@@ -78,6 +78,8 @@ RUN { \
     \
     echo 'apc.enable_cli=1' >> /usr/local/etc/php/conf.d/docker-php-ext-apcu.ini; \
     \
+    echo 'memory_limit=512M' > /usr/local/etc/php/conf.d/memory-limit.ini; \
+    \
     mkdir /var/www/data; \
     chown -R www-data:root /var/www; \
     chmod -R g=u /var/www
diff --git a/12.0/fpm/Dockerfile b/12.0/fpm/Dockerfile
index 3e6f44ba..e53bf612 100644
--- a/12.0/fpm/Dockerfile
+++ b/12.0/fpm/Dockerfile
@@ -89,6 +89,8 @@ RUN { \
     \
     echo 'apc.enable_cli=1' >> /usr/local/etc/php/conf.d/docker-php-ext-apcu.ini; \
     \
+    echo 'memory_limit=512M' > /usr/local/etc/php/conf.d/memory-limit.ini; \
+    \
     mkdir /var/www/data; \
     chown -R www-data:root /var/www; \
     chmod -R g=u /var/www
diff --git a/13.0/apache/Dockerfile b/13.0/apache/Dockerfile
index d92cbf12..3ee56d07 100644
--- a/13.0/apache/Dockerfile
+++ b/13.0/apache/Dockerfile
@@ -89,6 +89,8 @@ RUN { \
     \
     echo 'apc.enable_cli=1' >> /usr/local/etc/php/conf.d/docker-php-ext-apcu.ini; \
     \
+    echo 'memory_limit=512M' > /usr/local/etc/php/conf.d/memory-limit.ini; \
+    \
     mkdir /var/www/data; \
     chown -R www-data:root /var/www; \
     chmod -R g=u /var/www
diff --git a/13.0/fpm-alpine/Dockerfile b/13.0/fpm-alpine/Dockerfile
index 0298095e..6ce9aa42 100644
--- a/13.0/fpm-alpine/Dockerfile
+++ b/13.0/fpm-alpine/Dockerfile
@@ -78,6 +78,8 @@ RUN { \
     \
     echo 'apc.enable_cli=1' >> /usr/local/etc/php/conf.d/docker-php-ext-apcu.ini; \
     \
+    echo 'memory_limit=512M' > /usr/local/etc/php/conf.d/memory-limit.ini; \
+    \
     mkdir /var/www/data; \
     chown -R www-data:root /var/www; \
     chmod -R g=u /var/www
diff --git a/13.0/fpm/Dockerfile b/13.0/fpm/Dockerfile
index 063945d8..a3feaf2f 100644
--- a/13.0/fpm/Dockerfile
+++ b/13.0/fpm/Dockerfile
@@ -89,6 +89,8 @@ RUN { \
     \
     echo 'apc.enable_cli=1' >> /usr/local/etc/php/conf.d/docker-php-ext-apcu.ini; \
     \
+    echo 'memory_limit=512M' > /usr/local/etc/php/conf.d/memory-limit.ini; \
+    \
     mkdir /var/www/data; \
     chown -R www-data:root /var/www; \
     chmod -R g=u /var/www
diff --git a/14.0/apache/Dockerfile b/14.0/apache/Dockerfile
index 328af1f9..c2cdce82 100644
--- a/14.0/apache/Dockerfile
+++ b/14.0/apache/Dockerfile
@@ -89,6 +89,8 @@ RUN { \
     \
     echo 'apc.enable_cli=1' >> /usr/local/etc/php/conf.d/docker-php-ext-apcu.ini; \
     \
+    echo 'memory_limit=512M' > /usr/local/etc/php/conf.d/memory-limit.ini; \
+    \
     mkdir /var/www/data; \
     chown -R www-data:root /var/www; \
     chmod -R g=u /var/www
diff --git a/14.0/fpm-alpine/Dockerfile b/14.0/fpm-alpine/Dockerfile
index 5083e077..aeb9db69 100644
--- a/14.0/fpm-alpine/Dockerfile
+++ b/14.0/fpm-alpine/Dockerfile
@@ -78,6 +78,8 @@ RUN { \
     \
     echo 'apc.enable_cli=1' >> /usr/local/etc/php/conf.d/docker-php-ext-apcu.ini; \
     \
+    echo 'memory_limit=512M' > /usr/local/etc/php/conf.d/memory-limit.ini; \
+    \
     mkdir /var/www/data; \
     chown -R www-data:root /var/www; \
     chmod -R g=u /var/www
diff --git a/14.0/fpm/Dockerfile b/14.0/fpm/Dockerfile
index 132efb11..7ee23129 100644
--- a/14.0/fpm/Dockerfile
+++ b/14.0/fpm/Dockerfile
@@ -89,6 +89,8 @@ RUN { \
     \
     echo 'apc.enable_cli=1' >> /usr/local/etc/php/conf.d/docker-php-ext-apcu.ini; \
     \
+    echo 'memory_limit=512M' > /usr/local/etc/php/conf.d/memory-limit.ini; \
+    \
     mkdir /var/www/data; \
     chown -R www-data:root /var/www; \
     chmod -R g=u /var/www
diff --git a/Dockerfile-alpine.template b/Dockerfile-alpine.template
index 266c8076..db405303 100644
--- a/Dockerfile-alpine.template
+++ b/Dockerfile-alpine.template
@@ -77,6 +77,8 @@ RUN { \
     \
     echo 'apc.enable_cli=1' >> /usr/local/etc/php/conf.d/docker-php-ext-apcu.ini; \
     \
+    echo 'memory_limit=512M' > /usr/local/etc/php/conf.d/memory-limit.ini; \
+    \
     mkdir /var/www/data; \
     chown -R www-data:root /var/www; \
     chmod -R g=u /var/www
diff --git a/Dockerfile-debian.template b/Dockerfile-debian.template
index 6d3da1d2..ab6f88f9 100644
--- a/Dockerfile-debian.template
+++ b/Dockerfile-debian.template
@@ -88,6 +88,8 @@ RUN { \
     \
     echo 'apc.enable_cli=1' >> /usr/local/etc/php/conf.d/docker-php-ext-apcu.ini; \
     \
+    echo 'memory_limit=512M' > /usr/local/etc/php/conf.d/memory-limit.ini; \
+    \
     mkdir /var/www/data; \
     chown -R www-data:root /var/www; \
     chmod -R g=u /var/www