Enhancement: Use alpine image for php

Dockerfile.php.dev

@@ -1,14 +1,18 @@
-FROM php:7.4-fpm
+FROM php:7.4-fpm-alpine
 
 # opcache
 RUN docker-php-ext-install opcache
 
 # mysql PDO
 RUN docker-php-ext-install pdo pdo_mysql
 
-# xdebug
-RUN pecl install xdebug
-RUN docker-php-ext-enable xdebug
+# Xdebug: https://stackoverflow.com/questions/46825502/how-do-i-install-xdebug-on-dockers-official-php-fpm-alpine-image
+# PHPIZE_DEPS: autoconf dpkg-dev dpkg file g++ gcc libc-dev make pkgconf re2c
+RUN apk add --no-cache --virtual .build-dependencies $PHPIZE_DEPS \
+    && pecl install xdebug-3.1.5 \
+    && docker-php-ext-enable xdebug \
+    && docker-php-source delete \
+    && apk del .build-dependencies
 RUN { \
         echo "[xdebug]"; \
         echo "zend_extension=xdebug"; \

Dockerfile.php.prod

@@ -1,4 +1,4 @@
-FROM php:7.4-fpm AS build
+FROM php:7.4-fpm-alpine AS build
 ARG TARGETPLATFORM
 ARG BUILDPLATFORM
 RUN echo "I am running on $BUILDPLATFORM, building for $TARGETPLATFORM"
@@ -10,7 +10,7 @@ RUN chown -R www-data:www-data . \
     && find . -type d -exec chmod 750 {} \; \
     && find . -type f -exec chmod 640 {} \;
 
-FROM php:7.4-fpm AS final
+FROM php:7.4-fpm-alpine AS final
 
 # opcache
 RUN docker-php-ext-install opcache

README.md

@@ -28,7 +28,7 @@ docker-compose up --build
 # phpmyadmin available at http://localhost:8080. Username: root, password: ascent. See ./config/ASP/config.php config file
 
 # Fix php xdebug not reaching host IDE
-iptables -A INPUT -i br+ -j ACCEPT
+sudo iptables -A INPUT -i br+ -j ACCEPT
 
 # Test routes
 docker-compose -f docker-compose.test.yml up