diff --git a/.env b/.env
index 609f246..ad3ac31 100644
--- a/.env
+++ b/.env
@@ -1,6 +1,8 @@
 IMAGE_REPO=colpari/zammad-docker-compose
+MEMCACHE_SERVERS=zammad-memcached:11211
 POSTGRES_PASS=zammad
 POSTGRES_USER=zammad
+REDIS_URL=redis://zammad-redis:6379
 RESTART=always
 # don't forget to add the minus before the version
-VERSION=-4.1.0-6c
+VERSION=-5.0.1-1
diff --git a/.github/tests.sh b/.github/tests.sh
index 1f633f8..96fafc0 100755
--- a/.github/tests.sh
+++ b/.github/tests.sh
@@ -19,20 +19,20 @@ echo
 echo "Success - Zammad is up :)"
 echo
 
-echo 
+echo
 echo "Execute autowizard..."
 echo
 
 docker exec zammad-docker-compose_zammad-railsserver_1 rake zammad:setup:auto_wizard
 
-echo 
+echo
 echo "Autowizard executed successful :)"
-echo 
+echo
 
 
-echo 
+echo
 echo "Fill DB with some random data"
-docker exec zammad-docker-compose_zammad-railsserver_1 rails r "FillDB.load(agents: 1,customers: 1,groups: 1,organizations: 1,overviews: 1,tickets: 1)"
+docker exec zammad-docker-compose_zammad-railsserver_1 rails r "FillDb.load(agents: 1,customers: 1,groups: 1,organizations: 1,overviews: 1,tickets: 1)"
 
 echo
 echo "DB fill successful :)"
diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index ff9ea53..a38570f 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -38,6 +38,8 @@ jobs:
         env:
           DEFAULT_BRANCH: master
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          VALIDATE_JSCPD: false
+
 
   build-and-run-docker-compose:
     needs:
diff --git a/Dockerfile b/Dockerfile
index 6d1a25b..a56a298 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -8,5 +8,5 @@ LABEL org.label-schema.build-date="$BUILD_DATE" \
       org.label-schema.vcs-url="https://github.com/colpari/zammad" \
       org.label-schema.vcs-type="Git" \
       org.label-schema.vendor="colpari" \
-      org.label-schema.schema-version="4.1.0" \
+      org.label-schema.schema-version="5.0.1" \
       org.label-schema.docker.cmd="sysctl -w vm.max_map_count=262144;docker-compose up"
diff --git a/README.md b/README.md
index 2c7542b..6844c51 100644
--- a/README.md
+++ b/README.md
@@ -75,3 +75,8 @@ ALTER USER zammad WITH SUPERUSER CREATEDB;
 To be able to run Zammad container with an unprivileged user we had to change the port Nginx uses from 80 to 8080, so Zammad needs to be accessed via <http://localhost:8080> instead of <http://localhost> now!
 
 This change will also affect you, if you use a reverse proxy, like Traefik or Haproxy, in front of Zammad as your reverse proxy configuration needs to be adapted to point to port 8080 now.
+
+### From =< 4.0.0 to 5.0.0
+
+Memchached config changed. If you use the old env vars `MEMCACHED_HOST` & `MEMCACHED_PORT` adapt to `MEMCACHE_SERVERS`.
+Redis is a dependency for the Websocket server now.
diff --git a/containers/zammad-elasticsearch/Dockerfile b/containers/zammad-elasticsearch/Dockerfile
index ad8e891..41eb994 100644
--- a/containers/zammad-elasticsearch/Dockerfile
+++ b/containers/zammad-elasticsearch/Dockerfile
@@ -9,7 +9,7 @@ LABEL org.label-schema.build-date="$BUILD_DATE" \
       org.label-schema.vcs-url="https://github.com/colpari/zammad" \
       org.label-schema.vcs-type="Git" \
       org.label-schema.vendor="colpari" \
-      org.label-schema.schema-version="4.1.0" \
+      org.label-schema.schema-version="5.0.1" \
       org.label-schema.docker.cmd="sysctl -w vm.max_map_count=262144;docker-compose up"
 
 SHELL ["/bin/bash", "-e", "-o", "pipefail", "-c"]
diff --git a/containers/zammad-postgresql/Dockerfile b/containers/zammad-postgresql/Dockerfile
index b268f14..c3df6be 100644
--- a/containers/zammad-postgresql/Dockerfile
+++ b/containers/zammad-postgresql/Dockerfile
@@ -10,7 +10,7 @@ LABEL org.label-schema.build-date="$BUILD_DATE" \
       org.label-schema.vcs-url="https://github.com/colpari/zammad" \
       org.label-schema.vcs-type="Git" \
       org.label-schema.vendor="colpari" \
-      org.label-schema.schema-version="4.1.0" \
+      org.label-schema.schema-version="5.0.1" \
       org.label-schema.docker.cmd="sysctl -w vm.max_map_count=262144;docker-compose up"
 
 SHELL ["/bin/bash", "-e", "-o", "pipefail", "-c"]
diff --git a/containers/zammad/Dockerfile b/containers/zammad/Dockerfile
index 4a9b6d4..6f2ebfd 100644
--- a/containers/zammad/Dockerfile
+++ b/containers/zammad/Dockerfile
@@ -1,6 +1,6 @@
-FROM ruby:2.6.8-slim AS builder
 # note: zammad is currently incompatible to alpine because of:
 # https://github.com/docker-library/ruby/issues/113
+FROM ruby:2.7.4-slim AS builder
 
 ARG BUILD_DATE
 ARG DEBIAN_FRONTEND=noninteractive
@@ -24,7 +24,7 @@ RUN chmod +x /tmp/setup.sh; \
     /tmp/setup.sh builder
 
 
-FROM ruby:2.6.8-slim
+FROM ruby:2.7.4-slim
 
 ARG BUILD_DATE
 ARG DEBIAN_FRONTEND=noninteractive
@@ -37,7 +37,7 @@ LABEL org.label-schema.build-date="$BUILD_DATE" \
       org.label-schema.vcs-url="https://github.com/colpari/zammad" \
       org.label-schema.vcs-type="Git" \
       org.label-schema.vendor="colpari" \
-      org.label-schema.schema-version="4.1.0" \
+      org.label-schema.schema-version="5.0.1" \
       org.label-schema.docker.cmd="sysctl -w vm.max_map_count=262144;docker-compose up"
 
 ENV GIT_BRANCH colpari-develop
diff --git a/containers/zammad/docker-entrypoint.sh b/containers/zammad/docker-entrypoint.sh
index 619cbd1..56736f1 100755
--- a/containers/zammad/docker-entrypoint.sh
+++ b/containers/zammad/docker-entrypoint.sh
@@ -10,8 +10,6 @@ set -e
 : "${ELASTICSEARCH_NAMESPACE:=zammad}"
 : "${ELASTICSEARCH_REINDEX:=true}"
 : "${ELASTICSEARCH_SSL_VERIFY:=true}"
-: "${MEMCACHED_HOST:=zammad-memcached}"
-: "${MEMCACHED_PORT:=11211}"
 : "${NGINX_PORT:=8080}"
 : "${NGINX_SERVER_NAME:=_}"
 : "${NGINX_SERVER_SCHEME:=\$scheme}"
@@ -58,9 +56,6 @@ if [ "$1" = 'zammad-init' ]; then
   ESCAPED_POSTGRESQL_PASS=$(echo "$POSTGRESQL_PASS" | sed -e 's/[\/&]/\\&/g')
   sed -e "s#.*adapter:.*#  adapter: postgresql#g" -e "s#.*database:.*#  database: ${POSTGRESQL_DB}#g" -e "s#.*username:.*#  username: ${POSTGRESQL_USER}#g" -e "s#.*password:.*#  password: ${ESCAPED_POSTGRESQL_PASS}\\n  host: ${POSTGRESQL_HOST}\\n  port: ${POSTGRESQL_PORT}#g" < contrib/packager.io/database.yml.pkgr > config/database.yml
 
-  # configure memcache
-  sed -i -e "s/.*config.cache_store.*file_store.*cache_file_store.*/    config.cache_store = :dalli_store, '${MEMCACHED_HOST}:${MEMCACHED_PORT}'\\n    config.session_store = :dalli_store, '${MEMCACHED_HOST}:${MEMCACHED_PORT}'/" config/application.rb
-
   # configure trusted proxies
   sed -i -e "s#config.action_dispatch.trusted_proxies =.*#config.action_dispatch.trusted_proxies = ${RAILS_TRUSTED_PROXIES}#" config/environments/production.rb
 
@@ -74,10 +69,12 @@ if [ "$1" = 'zammad-init' ]; then
     bundle exec rake db:seed
 
     # create autowizard.json on first install
-    if [ -n "${AUTOWIZARD_JSON}" ]; then
-      echo "${AUTOWIZARD_JSON}" | base64 -d > auto_wizard.json
+    if base64 -d <<< ${AUTOWIZARD_JSON} &>> /dev/null; then
+      echo "Saving autowizard json payload..."
+      base64 -d <<< "${AUTOWIZARD_JSON}" > auto_wizard.json
     fi
   else
+    bundle exec rails r "Cache.clear"
     bundle exec rake db:migrate
   fi
 
diff --git a/containers/zammad/setup.sh b/containers/zammad/setup.sh
index 47160f3..fb41642 100755
--- a/containers/zammad/setup.sh
+++ b/containers/zammad/setup.sh
@@ -3,7 +3,7 @@ set -e
 
 # install dependencies
 if [ "$1" = 'builder' ]; then
-  PACKAGES="build-essential curl git libimlib2-dev libpq-dev shared-mime-info"
+  PACKAGES="build-essential curl git libimlib2-dev libpq-dev nodejs shared-mime-info"
 elif [ "$1" = 'runner' ]; then
   PACKAGES="curl libimlib2 libpq5 nginx rsync"
 fi
diff --git a/docker-compose.override-local.yml b/docker-compose.override-local.yml
index 26a0ebf..14baddf 100644
--- a/docker-compose.override-local.yml
+++ b/docker-compose.override-local.yml
@@ -1,4 +1,4 @@
-version: '2'
+version: '3'
 
 services:
 
diff --git a/docker-compose.override.yml b/docker-compose.override.yml
index c685a51..f7888bb 100644
--- a/docker-compose.override.yml
+++ b/docker-compose.override.yml
@@ -1,4 +1,4 @@
-version: '2'
+version: '3'
 services:
 
   zammad-nginx:
diff --git a/docker-compose.yml b/docker-compose.yml
index 7c3b90d..621c6f9 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,4 +1,4 @@
-version: '2'
+version: '3'
 
 services:
 
@@ -6,6 +6,7 @@ services:
     command: ["zammad-backup"]
     depends_on:
       - zammad-railsserver
+      - zammad-postgresql
     entrypoint: /usr/local/bin/backup.sh
     environment:
       - BACKUP_SLEEP=86400
@@ -13,8 +14,6 @@ services:
       - POSTGRESQL_USER=${POSTGRES_USER}
       - POSTGRESQL_PASSWORD=${POSTGRES_PASS}
     image: ${IMAGE_REPO}:zammad-postgresql${VERSION}
-    links:
-      - zammad-postgresql
     restart: ${RESTART}
     volumes:
       - zammad-backup:/var/tmp/zammad
@@ -33,19 +32,18 @@ services:
     depends_on:
       - zammad-postgresql
     environment:
+      - MEMCACHE_SERVERS=${MEMCACHE_SERVERS}
       - POSTGRESQL_USER=${POSTGRES_USER}
       - POSTGRESQL_PASS=${POSTGRES_PASS}
+      - REDIS_URL=${REDIS_URL}
     image: ${IMAGE_REPO}:zammad${VERSION}
-    links:
-      - zammad-elasticsearch
-      - zammad-postgresql
     restart: on-failure
     volumes:
       - zammad-data:/opt/zammad
 
   zammad-memcached:
     command: memcached -m 256M
-    image: memcached:1.6.9-alpine
+    image: memcached:1.6.10-alpine
     restart: ${RESTART}
 
   zammad-nginx:
@@ -55,9 +53,6 @@ services:
     depends_on:
       - zammad-railsserver
     image: ${IMAGE_REPO}:zammad${VERSION}
-    links:
-      - zammad-railsserver
-      - zammad-websocket
     restart: ${RESTART}
     volumes:
       - zammad-data:/opt/zammad
@@ -76,25 +71,29 @@ services:
     depends_on:
       - zammad-memcached
       - zammad-postgresql
+      - zammad-redis
+    environment:
+      - MEMCACHE_SERVERS=${MEMCACHE_SERVERS}
+      - REDIS_URL=${REDIS_URL}
     image: ${IMAGE_REPO}:zammad${VERSION}
-    links:
-      - zammad-elasticsearch
-      - zammad-memcached
-      - zammad-postgresql
     restart: ${RESTART}
     volumes:
       - zammad-data:/opt/zammad
 
+  zammad-redis:
+    image: redis:6.2.5-alpine
+    restart: ${RESTART}
+
   zammad-scheduler:
     command: ["zammad-scheduler"]
     depends_on:
       - zammad-memcached
       - zammad-railsserver
+      - zammad-redis
+    environment:
+      - MEMCACHE_SERVERS=${MEMCACHE_SERVERS}
+      - REDIS_URL=${REDIS_URL}
     image: ${IMAGE_REPO}:zammad${VERSION}
-    links:
-      - zammad-elasticsearch
-      - zammad-memcached
-      - zammad-postgresql
     restart: ${RESTART}
     volumes:
       - zammad-data:/opt/zammad
@@ -104,10 +103,11 @@ services:
     depends_on:
       - zammad-memcached
       - zammad-railsserver
+      - zammad-redis
+    environment:
+      - MEMCACHE_SERVERS=${MEMCACHE_SERVERS}
+      - REDIS_URL=${REDIS_URL}
     image: ${IMAGE_REPO}:zammad${VERSION}
-    links:
-      - zammad-postgresql
-      - zammad-memcached
     restart: ${RESTART}
     volumes:
       - zammad-data:/opt/zammad