diff --git a/Dockerfile-alpine.template b/Dockerfile-alpine.template
index c01d81a..822a956 100644
--- a/Dockerfile-alpine.template
+++ b/Dockerfile-alpine.template
@@ -2,7 +2,7 @@ FROM php:7.2-%%VARIANT%%
 
 # docker-entrypoint.sh dependencies
 RUN apk add --no-cache \
-	bash
+    bash
 
 # Install dependencies
 RUN set -ex; \
@@ -28,6 +28,27 @@ RUN set -ex; \
     apk add --virtual .phpmyadmin-phpexts-rundeps $runDeps; \
     apk del .build-deps
 
+# set recommended PHP.ini settings
+# see https://secure.php.net/manual/en/opcache.installation.php
+RUN { \
+        echo 'opcache.memory_consumption=128'; \
+        echo 'opcache.interned_strings_buffer=8'; \
+        echo 'opcache.max_accelerated_files=4000'; \
+        echo 'opcache.revalidate_freq=2'; \
+        echo 'opcache.fast_shutdown=1'; \
+    } > /usr/local/etc/php/conf.d/opcache-recommended.ini; \
+    \
+    { \
+        echo 'session.cookie_httponly = 1'; \
+        echo 'session.use_strict_mode = 1'; \
+    } > /usr/local/etc/php/conf.d/session-strict.ini; \
+    \
+    { \
+        echo 'allow_url_fopen = Off'; \
+        echo 'max_execution_time = 600'; \
+        echo 'memory_limit = 512M'; \
+    } > /usr/local/etc/php/conf.d/phpmyadmin-misc.ini
+
 # Calculate download URL
 ENV VERSION %%VERSION%%
 ENV URL https://files.phpmyadmin.net/phpMyAdmin/${VERSION}/phpMyAdmin-${VERSION}-all-languages.tar.xz
@@ -62,7 +83,6 @@ RUN set -ex; \
 
 # Copy configuration
 COPY config.inc.php /etc/phpmyadmin/config.inc.php
-COPY php.ini /usr/local/etc/php/conf.d/php-phpmyadmin.ini
 
 # Copy main script
 COPY docker-entrypoint.sh /docker-entrypoint.sh
diff --git a/Dockerfile-debian.template b/Dockerfile-debian.template
index 3413cfe..769677c 100644
--- a/Dockerfile-debian.template
+++ b/Dockerfile-debian.template
@@ -2,34 +2,55 @@ FROM php:7.2-%%VARIANT%%
 
 # Install dependencies
 RUN set -ex; \
-	\
-	savedAptMark="$(apt-mark showmanual)"; \
-	\
-	apt-get update; \
-	apt-get install -y --no-install-recommends \
-		libbz2-dev \
-		libfreetype6-dev \
-		libjpeg-dev \
-		libpng-dev \
-		libwebp-dev \
-		libxpm-dev \
-	; \
-	\
-	docker-php-ext-configure gd --with-freetype-dir=/usr --with-jpeg-dir=/usr --with-webp-dir=/usr --with-png-dir=/usr --with-xpm-dir=/usr; \
-	docker-php-ext-install bz2 gd mysqli opcache zip; \
-	\
-	apt-mark auto '.*' > /dev/null; \
-	apt-mark manual $savedAptMark; \
-	ldd "$(php -r 'echo ini_get("extension_dir");')"/*.so \
-		| awk '/=>/ { print $3 }' \
-		| sort -u \
-		| xargs -r dpkg-query -S \
-		| cut -d: -f1 \
-		| sort -u \
-		| xargs -rt apt-mark manual; \
-	\
-	apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \
-	rm -rf /var/lib/apt/lists/*
+    \
+    savedAptMark="$(apt-mark showmanual)"; \
+    \
+    apt-get update; \
+    apt-get install -y --no-install-recommends \
+        libbz2-dev \
+        libfreetype6-dev \
+        libjpeg-dev \
+        libpng-dev \
+        libwebp-dev \
+        libxpm-dev \
+    ; \
+    \
+    docker-php-ext-configure gd --with-freetype-dir=/usr --with-jpeg-dir=/usr --with-webp-dir=/usr --with-png-dir=/usr --with-xpm-dir=/usr; \
+    docker-php-ext-install bz2 gd mysqli opcache zip; \
+    \
+    apt-mark auto '.*' > /dev/null; \
+    apt-mark manual $savedAptMark; \
+    ldd "$(php -r 'echo ini_get("extension_dir");')"/*.so \
+        | awk '/=>/ { print $3 }' \
+        | sort -u \
+        | xargs -r dpkg-query -S \
+        | cut -d: -f1 \
+        | sort -u \
+        | xargs -rt apt-mark manual; \
+    \
+    apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \
+    rm -rf /var/lib/apt/lists/*
+
+# set recommended PHP.ini settings
+# see https://secure.php.net/manual/en/opcache.installation.php
+RUN { \
+        echo 'opcache.memory_consumption=128'; \
+        echo 'opcache.interned_strings_buffer=8'; \
+        echo 'opcache.max_accelerated_files=4000'; \
+        echo 'opcache.revalidate_freq=2'; \
+        echo 'opcache.fast_shutdown=1'; \
+    } > /usr/local/etc/php/conf.d/opcache-recommended.ini; \
+    \
+    { \
+        echo 'session.cookie_httponly = 1'; \
+        echo 'session.use_strict_mode = 1'; \
+    } > /usr/local/etc/php/conf.d/session-strict.ini; \
+    \
+    { \
+        echo 'allow_url_fopen = Off'; \
+        echo 'max_execution_time = 600'; \
+        echo 'memory_limit = 512M'; \
+    } > /usr/local/etc/php/conf.d/phpmyadmin-misc.ini
 
 # Calculate download URL
 ENV VERSION %%VERSION%%
@@ -70,7 +91,6 @@ RUN set -ex; \
 
 # Copy configuration
 COPY config.inc.php /etc/phpmyadmin/config.inc.php
-COPY php.ini /usr/local/etc/php/conf.d/php-phpmyadmin.ini
 
 # Copy main script
 COPY docker-entrypoint.sh /docker-entrypoint.sh
diff --git a/apache/Dockerfile b/apache/Dockerfile
index 8419655..9035741 100644
--- a/apache/Dockerfile
+++ b/apache/Dockerfile
@@ -2,34 +2,56 @@ FROM php:7.2-apache
 
 # Install dependencies
 RUN set -ex; \
-	\
-	savedAptMark="$(apt-mark showmanual)"; \
-	\
-	apt-get update; \
-	apt-get install -y --no-install-recommends \
-		libbz2-dev \
-		libfreetype6-dev \
-		libjpeg-dev \
-		libpng-dev \
-		libwebp-dev \
-		libxpm-dev \
-	; \
-	\
-	docker-php-ext-configure gd --with-freetype-dir=/usr --with-jpeg-dir=/usr --with-webp-dir=/usr --with-png-dir=/usr --with-xpm-dir=/usr; \
-	docker-php-ext-install bz2 gd mysqli opcache zip; \
-	\
-	apt-mark auto '.*' > /dev/null; \
-	apt-mark manual $savedAptMark; \
-	ldd "$(php -r 'echo ini_get("extension_dir");')"/*.so \
-		| awk '/=>/ { print $3 }' \
-		| sort -u \
-		| xargs -r dpkg-query -S \
-		| cut -d: -f1 \
-		| sort -u \
-		| xargs -rt apt-mark manual; \
-	\
-	apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \
-	rm -rf /var/lib/apt/lists/*
+    \
+    savedAptMark="$(apt-mark showmanual)"; \
+    \
+    apt-get update; \
+    apt-get install -y --no-install-recommends \
+        libbz2-dev \
+        libfreetype6-dev \
+        libjpeg-dev \
+        libpng-dev \
+        libwebp-dev \
+        libxpm-dev \
+    ; \
+    \
+    docker-php-ext-configure gd --with-freetype-dir=/usr --with-jpeg-dir=/usr --with-webp-dir=/usr --with-png-dir=/usr --with-xpm-dir=/usr; \
+    docker-php-ext-install bz2 gd mysqli opcache zip; \
+    \
+    apt-mark auto '.*' > /dev/null; \
+    apt-mark manual $savedAptMark; \
+    ldd "$(php -r 'echo ini_get("extension_dir");')"/*.so \
+        | awk '/=>/ { print $3 }' \
+        | sort -u \
+        | xargs -r dpkg-query -S \
+        | cut -d: -f1 \
+        | sort -u \
+        | xargs -rt apt-mark manual; \
+    \
+    apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \
+    rm -rf /var/lib/apt/lists/*
+
+# set recommended PHP.ini settings
+# see https://secure.php.net/manual/en/opcache.installation.php
+RUN { \
+        echo 'opcache.memory_consumption=128'; \
+        echo 'opcache.interned_strings_buffer=8'; \
+        echo 'opcache.max_accelerated_files=4000'; \
+        echo 'opcache.revalidate_freq=2'; \
+        echo 'opcache.fast_shutdown=1'; \
+        echo 'opcache.enable_cli=1'; \
+    } > /usr/local/etc/php/conf.d/opcache-recommended.ini; \
+    \
+    { \
+        echo 'session.cookie_httponly = 1'; \
+        echo 'session.use_strict_mode = 1'; \
+    } > /usr/local/etc/php/conf.d/session-strict.ini; \
+    \
+    { \
+        echo 'allow_url_fopen = Off'; \
+        echo 'max_execution_time = 600'; \
+        echo 'memory_limit = 512M'; \
+    } > /usr/local/etc/php/conf.d/phpmyadmin-misc.ini
 
 # Calculate download URL
 ENV VERSION 4.9.0.1
@@ -70,7 +92,6 @@ RUN set -ex; \
 
 # Copy configuration
 COPY config.inc.php /etc/phpmyadmin/config.inc.php
-COPY php.ini /usr/local/etc/php/conf.d/php-phpmyadmin.ini
 
 # Copy main script
 COPY docker-entrypoint.sh /docker-entrypoint.sh
diff --git a/apache/php.ini b/apache/php.ini
deleted file mode 100644
index 3dad93a..0000000
--- a/apache/php.ini
+++ /dev/null
@@ -1,20 +0,0 @@
-[PHP]
-allow_url_fopen = Off
-max_execution_time = 600
-memory_limit = 512M
-open_basedir = /var/www/html:/tmp/:/etc/phpmyadmin/
-post_max_size = 512M
-upload_max_filesize = 512M
-
-[Session]
-session.cookie_httponly = 1
-session.hash_function = 1
-session.save_path = "/sessions"
-session.use_strict_mode = 1
-
-[opcache]
-opcache.fast_shutdown = 1
-opcache.restrict_api = /disabled/
-opcache.save_comments = 0
-opcache.use_cwd = 0
-opcache.validate_timestamps = 0
diff --git a/fpm-alpine/Dockerfile b/fpm-alpine/Dockerfile
index e30a370..14b364c 100644
--- a/fpm-alpine/Dockerfile
+++ b/fpm-alpine/Dockerfile
@@ -2,7 +2,7 @@ FROM php:7.2-fpm-alpine
 
 # docker-entrypoint.sh dependencies
 RUN apk add --no-cache \
-	bash
+    bash
 
 # Install dependencies
 RUN set -ex; \
@@ -28,6 +28,28 @@ RUN set -ex; \
     apk add --virtual .phpmyadmin-phpexts-rundeps $runDeps; \
     apk del .build-deps
 
+# set recommended PHP.ini settings
+# see https://secure.php.net/manual/en/opcache.installation.php
+RUN { \
+        echo 'opcache.memory_consumption=128'; \
+        echo 'opcache.interned_strings_buffer=8'; \
+        echo 'opcache.max_accelerated_files=4000'; \
+        echo 'opcache.revalidate_freq=2'; \
+        echo 'opcache.fast_shutdown=1'; \
+        echo 'opcache.enable_cli=1'; \
+    } > /usr/local/etc/php/conf.d/opcache-recommended.ini; \
+    \
+    { \
+        echo 'session.cookie_httponly = 1'; \
+        echo 'session.use_strict_mode = 1'; \
+    } > /usr/local/etc/php/conf.d/session-strict.ini; \
+    \
+    { \
+        echo 'allow_url_fopen = Off'; \
+        echo 'max_execution_time = 600'; \
+        echo 'memory_limit = 512M'; \
+    } > /usr/local/etc/php/conf.d/phpmyadmin-misc.ini
+
 # Calculate download URL
 ENV VERSION 4.9.0.1
 ENV URL https://files.phpmyadmin.net/phpMyAdmin/${VERSION}/phpMyAdmin-${VERSION}-all-languages.tar.xz
@@ -62,7 +84,6 @@ RUN set -ex; \
 
 # Copy configuration
 COPY config.inc.php /etc/phpmyadmin/config.inc.php
-COPY php.ini /usr/local/etc/php/conf.d/php-phpmyadmin.ini
 
 # Copy main script
 COPY docker-entrypoint.sh /docker-entrypoint.sh
diff --git a/fpm-alpine/php.ini b/fpm-alpine/php.ini
deleted file mode 100644
index 3dad93a..0000000
--- a/fpm-alpine/php.ini
+++ /dev/null
@@ -1,20 +0,0 @@
-[PHP]
-allow_url_fopen = Off
-max_execution_time = 600
-memory_limit = 512M
-open_basedir = /var/www/html:/tmp/:/etc/phpmyadmin/
-post_max_size = 512M
-upload_max_filesize = 512M
-
-[Session]
-session.cookie_httponly = 1
-session.hash_function = 1
-session.save_path = "/sessions"
-session.use_strict_mode = 1
-
-[opcache]
-opcache.fast_shutdown = 1
-opcache.restrict_api = /disabled/
-opcache.save_comments = 0
-opcache.use_cwd = 0
-opcache.validate_timestamps = 0
diff --git a/fpm/Dockerfile b/fpm/Dockerfile
index e25e40d..d3fda5d 100644
--- a/fpm/Dockerfile
+++ b/fpm/Dockerfile
@@ -2,34 +2,56 @@ FROM php:7.2-fpm
 
 # Install dependencies
 RUN set -ex; \
-	\
-	savedAptMark="$(apt-mark showmanual)"; \
-	\
-	apt-get update; \
-	apt-get install -y --no-install-recommends \
-		libbz2-dev \
-		libfreetype6-dev \
-		libjpeg-dev \
-		libpng-dev \
-		libwebp-dev \
-		libxpm-dev \
-	; \
-	\
-	docker-php-ext-configure gd --with-freetype-dir=/usr --with-jpeg-dir=/usr --with-webp-dir=/usr --with-png-dir=/usr --with-xpm-dir=/usr; \
-	docker-php-ext-install bz2 gd mysqli opcache zip; \
-	\
-	apt-mark auto '.*' > /dev/null; \
-	apt-mark manual $savedAptMark; \
-	ldd "$(php -r 'echo ini_get("extension_dir");')"/*.so \
-		| awk '/=>/ { print $3 }' \
-		| sort -u \
-		| xargs -r dpkg-query -S \
-		| cut -d: -f1 \
-		| sort -u \
-		| xargs -rt apt-mark manual; \
-	\
-	apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \
-	rm -rf /var/lib/apt/lists/*
+    \
+    savedAptMark="$(apt-mark showmanual)"; \
+    \
+    apt-get update; \
+    apt-get install -y --no-install-recommends \
+        libbz2-dev \
+        libfreetype6-dev \
+        libjpeg-dev \
+        libpng-dev \
+        libwebp-dev \
+        libxpm-dev \
+    ; \
+    \
+    docker-php-ext-configure gd --with-freetype-dir=/usr --with-jpeg-dir=/usr --with-webp-dir=/usr --with-png-dir=/usr --with-xpm-dir=/usr; \
+    docker-php-ext-install bz2 gd mysqli opcache zip; \
+    \
+    apt-mark auto '.*' > /dev/null; \
+    apt-mark manual $savedAptMark; \
+    ldd "$(php -r 'echo ini_get("extension_dir");')"/*.so \
+        | awk '/=>/ { print $3 }' \
+        | sort -u \
+        | xargs -r dpkg-query -S \
+        | cut -d: -f1 \
+        | sort -u \
+        | xargs -rt apt-mark manual; \
+    \
+    apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \
+    rm -rf /var/lib/apt/lists/*
+
+# set recommended PHP.ini settings
+# see https://secure.php.net/manual/en/opcache.installation.php
+RUN { \
+        echo 'opcache.memory_consumption=128'; \
+        echo 'opcache.interned_strings_buffer=8'; \
+        echo 'opcache.max_accelerated_files=4000'; \
+        echo 'opcache.revalidate_freq=2'; \
+        echo 'opcache.fast_shutdown=1'; \
+        echo 'opcache.enable_cli=1'; \
+    } > /usr/local/etc/php/conf.d/opcache-recommended.ini; \
+    \
+    { \
+        echo 'session.cookie_httponly = 1'; \
+        echo 'session.use_strict_mode = 1'; \
+    } > /usr/local/etc/php/conf.d/session-strict.ini; \
+    \
+    { \
+        echo 'allow_url_fopen = Off'; \
+        echo 'max_execution_time = 600'; \
+        echo 'memory_limit = 512M'; \
+    } > /usr/local/etc/php/conf.d/phpmyadmin-misc.ini
 
 # Calculate download URL
 ENV VERSION 4.9.0.1
@@ -70,7 +92,6 @@ RUN set -ex; \
 
 # Copy configuration
 COPY config.inc.php /etc/phpmyadmin/config.inc.php
-COPY php.ini /usr/local/etc/php/conf.d/php-phpmyadmin.ini
 
 # Copy main script
 COPY docker-entrypoint.sh /docker-entrypoint.sh
diff --git a/fpm/php.ini b/fpm/php.ini
deleted file mode 100644
index 3dad93a..0000000
--- a/fpm/php.ini
+++ /dev/null
@@ -1,20 +0,0 @@
-[PHP]
-allow_url_fopen = Off
-max_execution_time = 600
-memory_limit = 512M
-open_basedir = /var/www/html:/tmp/:/etc/phpmyadmin/
-post_max_size = 512M
-upload_max_filesize = 512M
-
-[Session]
-session.cookie_httponly = 1
-session.hash_function = 1
-session.save_path = "/sessions"
-session.use_strict_mode = 1
-
-[opcache]
-opcache.fast_shutdown = 1
-opcache.restrict_api = /disabled/
-opcache.save_comments = 0
-opcache.use_cwd = 0
-opcache.validate_timestamps = 0
diff --git a/php.ini b/php.ini
deleted file mode 100644
index 3dad93a..0000000
--- a/php.ini
+++ /dev/null
@@ -1,20 +0,0 @@
-[PHP]
-allow_url_fopen = Off
-max_execution_time = 600
-memory_limit = 512M
-open_basedir = /var/www/html:/tmp/:/etc/phpmyadmin/
-post_max_size = 512M
-upload_max_filesize = 512M
-
-[Session]
-session.cookie_httponly = 1
-session.hash_function = 1
-session.save_path = "/sessions"
-session.use_strict_mode = 1
-
-[opcache]
-opcache.fast_shutdown = 1
-opcache.restrict_api = /disabled/
-opcache.save_comments = 0
-opcache.use_cwd = 0
-opcache.validate_timestamps = 0
diff --git a/update.sh b/update.sh
index 13d33d1..00443d0 100755
--- a/update.sh
+++ b/update.sh
@@ -28,7 +28,6 @@ for variant in apache fpm fpm-alpine; do
 	cp $template "$variant/Dockerfile"
 	cp config.inc.php "$variant/config.inc.php"
 	cp docker-entrypoint.sh "$variant/docker-entrypoint.sh"
-	cp php.ini "$variant/php.ini"
 	sed -ri -e '
 		s/%%VERSION%%/'"$latest"'/;
 		s/%%VARIANT%%/'"$variant"'/;