Explicitly using desired versions; added nano editor into dockerfile (less logs)

Dockerfile

@@ -4,11 +4,12 @@ WORKDIR /var/www
 
 # Installing needed packages
 RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
-    mysql-server \
+    mysql-server-5.7 \
+    nano \
     nginx \
-    php-fpm \
-    php-mysql \
-    php-cli \
+    php7.2-fpm \
+    php7.2-mysql \
+    php7.2-cli \
     && rm -rf /var/lib/apt/lists/* \
     && rm -rf /var/www/html \
     && rm /etc/nginx/sites-enabled/default

entrypoint.sh

@@ -11,9 +11,5 @@ service php7.2-fpm start
 echo "[ INFO ] Setting up friendBook database"
 mysql -u root < /scripts/friendBook.sql
 
-# Installing nano to make live changes a little quicker
-echo "[ INFO ] Installing nano editor"
-apt-get update && apt-get install -y nano
-
 echo "[ INFO ] Starting nginx"
 nginx -g "daemon off;" # Foreground