Add Dockerfile-remote-dev-env & Update GitLab CI

This MR adds necessary files and configs for creating remote development envrionment registry image.

Related MR: drupal-operations!21 (closed)

Related Issue: https://gitlab.cern.ch/webservices/webframeworks-planning/-/issues/990#note_5791923

images/Dockerfile-composerbuilder

@@ -35,7 +35,7 @@ RUN apk --update add \
     libcurl \
     imagemagick-dev \
     imagemagick \
-    php7-pecl-imagick \
+    php8-pecl-imagick \
     bzip2-dev \
     ldb-dev \
     libldap \
@@ -46,7 +46,7 @@ RUN apk --update add \
     libxslt \
     net-snmp \
     net-snmp-dev \
-    php7-mbstring
+    php8-mbstring
 
 # Fix for iconv library
 # This must be present in the sitebuilder image,
@@ -97,6 +97,13 @@ RUN set -eux; \
 	docker-php-ext-enable igbinary\
     ; \
 	\
+    # install xmlrpc
+	pecl install -o -f xmlrpc\
+	; \
+	\
+	docker-php-ext-enable xmlrpc\
+    ; \
+	\
     # install msgpack
 	pecl install -o -f msgpack\
 	; \
@@ -136,7 +143,7 @@ RUN set -eux; \
         sysvshm \
         xml \
         #wddx \ Does not exist for Drupal9/PHP7.4
-        xmlrpc \
+        # xmlrpc \ Does not exist for PHP 8.1
         xsl \
 	; \
 	\