[TOOLS][DOCKER] Rewrite the configuration script to use whiptail/dialog, and refactor

docker/php/docker-compose.fragment.sh

@@ -0,0 +1,34 @@
+#!/usr/bin/sh
+
+cat <<EOF
+    php:
+        build: docker/php
+EOF
+
+
+# If the user wants a DB docker container
+if echo "${DOCKER}" | grep -Fvq '"db"'; then
+    cat <<EOF
+        depends_on:
+            - db
+EOF
+fi
+
+cat <<EOF
+        restart: always
+        tty: true
+        ports:
+            - ${PHP_PORT}:9000
+        volumes:
+            # Entrypoint
+            - ./docker/php/entrypoint.sh:/entrypoint.sh
+            - ./docker/db/wait_for_db.sh:/wait_for_db.sh
+            - ./docker/social/install.sh:/var/entrypoint.d/social_install.sh
+            # Main files
+            - .:/var/www/social
+        env_file:
+            - ./docker/social/social.env
+            - ./docker/db/db.env
+        command: /entrypoint.sh
+
+EOF