Merge pull request 'update nextcloud to version 20.0.2 and update php from 7.3 to 7.4' (#3) from 20.0.44_with_php7.4 into master

Reviewed-on: #3

webservice/Dockerfile

@@ -1,6 +1,6 @@
-FROM php:7.3-apache
+FROM php:7.4-apache
 
-ENV NEXTCLOUD_VERSION 20.0.1
+ENV NEXTCLOUD_VERSION 20.0.2
 
 RUN \
     apt-get update && \
@@ -44,7 +44,7 @@ RUN \
 
 RUN \
     docker-php-ext-configure ldap --with-libdir=lib/x86_64-linux-gnu && \
-    docker-php-ext-configure gd --with-freetype-dir=/usr/include/ --with-jpeg-dir=/usr/include/ && \
+    docker-php-ext-configure gd --with-freetype=/usr/include/ --with-jpeg=/usr/include/ && \
     docker-php-ext-install \
         ldap \
         ctype \
@@ -53,7 +53,6 @@ RUN \
         gmp \
         iconv \
         json \
-        mbstring \
         xmlwriter \
         zip \
         pdo_mysql \