diff --git a/Dockerfile-alpine.template b/Dockerfile-alpine.template
index 65c31c5..470fc97 100644
--- a/Dockerfile-alpine.template
+++ b/Dockerfile-alpine.template
@@ -43,18 +43,18 @@ RUN { \
         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; \
+    } > $PHP_INI_DIR/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; \
+    } > $PHP_INI_DIR/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
+    } > $PHP_INI_DIR/conf.d/phpmyadmin-misc.ini
 
 # Calculate download URL
 ENV VERSION %%VERSION%%
diff --git a/Dockerfile-debian.template b/Dockerfile-debian.template
index 52df106..3fc3d1e 100644
--- a/Dockerfile-debian.template
+++ b/Dockerfile-debian.template
@@ -46,18 +46,18 @@ RUN { \
         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; \
+    } > $PHP_INI_DIR/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; \
+    } > $PHP_INI_DIR/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
+    } > $PHP_INI_DIR/conf.d/phpmyadmin-misc.ini
 
 # Calculate download URL
 ENV VERSION %%VERSION%%
diff --git a/apache/Dockerfile b/apache/Dockerfile
index ebb8154..32114c8 100644
--- a/apache/Dockerfile
+++ b/apache/Dockerfile
@@ -46,18 +46,18 @@ RUN { \
         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; \
+    } > $PHP_INI_DIR/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; \
+    } > $PHP_INI_DIR/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
+    } > $PHP_INI_DIR/conf.d/phpmyadmin-misc.ini
 
 # Calculate download URL
 ENV VERSION 4.9.2
diff --git a/fpm-alpine/Dockerfile b/fpm-alpine/Dockerfile
index c717b3e..df650d9 100644
--- a/fpm-alpine/Dockerfile
+++ b/fpm-alpine/Dockerfile
@@ -43,18 +43,18 @@ RUN { \
         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; \
+    } > $PHP_INI_DIR/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; \
+    } > $PHP_INI_DIR/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
+    } > $PHP_INI_DIR/conf.d/phpmyadmin-misc.ini
 
 # Calculate download URL
 ENV VERSION 4.9.2
diff --git a/fpm/Dockerfile b/fpm/Dockerfile
index 9a54232..9dbaafa 100644
--- a/fpm/Dockerfile
+++ b/fpm/Dockerfile
@@ -46,18 +46,18 @@ RUN { \
         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; \
+    } > $PHP_INI_DIR/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; \
+    } > $PHP_INI_DIR/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
+    } > $PHP_INI_DIR/conf.d/phpmyadmin-misc.ini
 
 # Calculate download URL
 ENV VERSION 4.9.2