clean apt source file after install.

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

php-fpm/Dockerfile-55

@@ -8,7 +8,9 @@ ADD ./laravel.pool.conf /usr/local/etc/php-fpm.d/
 RUN apt-get update && apt-get install -y \
     libpq-dev \
     libmemcached-dev \
-    curl
+    curl \
+    --no-install-recommends \
+    && rm -r /var/lib/apt/lists/*
 
 # Install extensions using the helper script provided by the base image
 RUN docker-php-ext-install \

php-fpm/Dockerfile-56

@@ -8,7 +8,9 @@ ADD ./laravel.pool.conf /usr/local/etc/php-fpm.d/
 RUN apt-get update && apt-get install -y \
     libpq-dev \
     libmemcached-dev \
-    curl
+    curl \
+    --no-install-recommends \
+    && rm -r /var/lib/apt/lists/*
 
 # Install extensions using the helper script provided by the base image
 RUN docker-php-ext-install \

php-fpm/Dockerfile-70

@@ -8,7 +8,9 @@ ADD ./laravel.pool.conf /usr/local/etc/php-fpm.d/
 RUN apt-get update && apt-get install -y \
     libpq-dev \
     libmemcached-dev \
-    curl
+    curl \
+    --no-install-recommends \
+    && rm -r /var/lib/apt/lists/*
 
 # Install extensions using the helper script provided by the base image
 RUN docker-php-ext-install \