diff --git a/.circleci/config.yml b/.circleci/config.yml
deleted file mode 100644
index 327eea57e..000000000
--- a/.circleci/config.yml
+++ /dev/null
@@ -1,67 +0,0 @@
-version: 2.1
-jobs:
-  lint-scripts:
-    docker:
-      - image: koalaman/shellcheck-alpine
-    steps:
-      - checkout
-      - run:
-          name: lint-scripts
-          command: .circleci/lint-scripts.sh
-
-  install-mysql:
-    docker:
-      - image: circleci/ruby:2.5.5
-      - image: circleci/mysql:5.7-ram
-        command: --max_allowed_packet=64MB
-        environment:
-          MYSQL_DATABASE: zammad_test
-          MYSQL_USER: zammad_test
-          MYSQL_PASSWORD: zammad_test
-    environment:
-      RAILS_ENV: test
-    steps:
-      - checkout
-      - run:
-          name: install-mysql
-          command: .circleci/install.sh
-
-  install-postgresql:
-    docker:
-      - image: circleci/ruby:2.5.5
-      - image: circleci/postgres:11-ram
-        environment:
-          POSTGRES_DB: zammad_test
-          POSTGRES_USER: zammad_test
-          POSTGRES_PASSWORD: zammad_test
-    environment:
-      RAILS_ENV: test
-    steps:
-      - checkout
-      - run:
-          name: install-postgresql
-          command: .circleci/install.sh
-
-  docker-image-build:
-    machine: true
-    steps:
-      - checkout
-      - run:
-          name: docker-image-build
-          command: .circleci/docker-image-build.sh
-
-workflows:
-  version: 2
-  install_unittest_dockerbuild:
-    jobs:
-      - lint-scripts
-      - install-mysql:
-          requires:
-            - lint-scripts
-      - install-postgresql:
-          requires:
-            - lint-scripts
-      - docker-image-build:
-          requires:
-            - install-mysql
-            - install-postgresql
diff --git a/.circleci/docker-image-build.sh b/.circleci/docker-image-build.sh
deleted file mode 100755
index 8d864ad94..000000000
--- a/.circleci/docker-image-build.sh
+++ /dev/null
@@ -1,39 +0,0 @@
-#!/usr/bin/env bash
-#
-# build zammads docker & docker-compose images
-
-set -o errexit
-set -o pipefail
-
-REPO_ROOT="$(git rev-parse --show-toplevel)"
-GITHUB_REPO_USER="zammad"
-ZAMMAD_VERSION="$(git describe --tags | sed -e 's/-[a-z0-9]\{8,\}.*//g')"
-export ZAMMAD_VERSION
-
-if [ "${CIRCLE_BRANCH}" == 'develop' ]; then
-  BUILD_SCRIPT="scripts/build_image.sh"
-  DOCKER_REPOSITORY="zammad"
-  export DOCKER_REPOSITORY
-  GITHUB_REPOSITORY="zammad-docker"
-elif [ "${CIRCLE_BRANCH}" == 'stable' ]; then
-  BUILD_SCRIPT="hooks/build"
-  DOCKER_REPOSITORY="zammad-docker-compose"
-  export DOCKER_REPOSITORY
-  GITHUB_REPOSITORY="zammad-docker-compose"
-else
-  echo "branch is ${CIRCLE_BRANCH}... no docker image build needed..."
-  exit 0
-fi
-
-# dockerhub auth
-echo "${DOCKER_PASSWORD}" | docker login --username="${DOCKER_USERNAME}" --password-stdin
-
-# clone docker repo
-git clone https://github.com/"${GITHUB_REPO_USER}"/"${GITHUB_REPOSITORY}"
-
-# enter dockerfile dir
-cd "${REPO_ROOT}/${GITHUB_REPOSITORY}"
-
-# build & push docker image
-# shellcheck disable=SC1090
-source "${REPO_ROOT}/${GITHUB_REPOSITORY}/${BUILD_SCRIPT}"
diff --git a/.circleci/install.sh b/.github/ci.sh
similarity index 87%
rename from .circleci/install.sh
rename to .github/ci.sh
index 467b500f0..f008bb8d7 100755
--- a/.circleci/install.sh
+++ b/.github/ci.sh
@@ -12,15 +12,12 @@ DB_CONFIG="test:\n  adapter: postgresql\n  database: zammad_test\n  host: 127.0.
 sudo apt-get update
 sudo apt-get install -y --no-install-recommends autoconf automake autotools-dev bison build-essential curl git-core libffi-dev libgdbm-dev libgmp-dev libmariadbclient-dev-compat libncurses5-dev libreadline-dev libsqlite3-dev libssl-dev libtool libxml2-dev libxslt1-dev libyaml-0-2 libyaml-dev patch pkg-config postfix sqlite3 zlib1g-dev libimlib2 libimlib2-dev
 
-if [ "${CIRCLE_JOB}" == "install-mysql" ]; then
+if [ "${ZAMMAD_DBS}" == "mysql" ]; then
   DB_ADAPTER="mysql2"
   INSTALL_OPTION="postgres"
-elif [ "${CIRCLE_JOB}" == "install-postgresql" ]; then
+elif [ "${ZAMMAD_DBS}" == "postgresql" ]; then
   DB_ADAPTER="postgresql"
   INSTALL_OPTION="mysql"
-else
-  echo "nothing to do for circle ci job ${CIRCLE_JOB}..."
-  exit 0
 fi
 
 # create db config
diff --git a/.github/docker-image-build.sh b/.github/docker-image-build.sh
new file mode 100755
index 000000000..2bed228d2
--- /dev/null
+++ b/.github/docker-image-build.sh
@@ -0,0 +1,33 @@
+#!/usr/bin/env bash
+#
+# build zammads docker & docker-compose images
+
+set -o errexit
+set -o pipefail
+
+DOCKER_REGISTRY="index.docker.io"
+REPO_ROOT="$(git rev-parse --show-toplevel)"
+REPO_USER="zammad"
+ZAMMAD_VERSION="$(git describe --tags | sed -e 's/-[a-z0-9]\{8,\}.*//g')"
+
+# dockerhub auth
+echo "${DOCKER_PASSWORD}" | docker login --username="${DOCKER_USERNAME}" --password-stdin
+
+# clone docker repo
+git clone https://github.com/"${REPO_USER}"/"${GITHUB_REPOSITORY}"
+
+# enter dockerfile dir
+cd "${REPO_ROOT}/${GITHUB_REPOSITORY}"
+
+for DOCKER_IMAGE in ${DOCKER_IMAGES}; do
+  echo "Build Zammad Docker image ${DOCKER_IMAGE} with version ${ZAMMAD_VERSION} for DockerHubs ${DOCKER_REGISTRY}/${REPO_USER}/${DOCKER_REPOSITORY}:${DOCKER_IMAGE} repo"
+
+  if [ "${DOCKER_REPOSITORY}" == "zammad-docker-compose" ]; then
+    docker build --pull --no-cache --build-arg BUILD_DATE="$(date -u +'%Y-%m-%dT%H:%M:%SZ')" -t ${DOCKER_REGISTRY}/${REPO_USER}/${DOCKER_REPOSITORY}:${DOCKER_IMAGE} -t ${DOCKER_REGISTRY}/${REPO_USER}/${DOCKER_REPOSITORY}:${DOCKER_IMAGE}-latest -t ${DOCKER_REGISTRY}/${REPO_USER}/${DOCKER_REPOSITORY}:${DOCKER_IMAGE}-${ZAMMAD_VERSION} -f containers/${DOCKER_IMAGE}/Dockerfile .
+    docker push ${DOCKER_REGISTRY}/${REPO_USER}/${DOCKER_REPOSITORY}:${DOCKER_IMAGE}-latest
+  else
+    docker build --pull --no-cache --build-arg BUILD_DATE="$(date -u +”%Y-%m-%dT%H:%M:%SZ”)" -t ${DOCKER_REGISTRY}/${REPO_USER}/${DOCKER_REPOSITORY}:latest -t ${DOCKER_REGISTRY}/${REPO_USER}/${DOCKER_REPOSITORY}:${ZAMMAD_VERSION} .     
+  fi
+  docker push ${DOCKER_REGISTRY}/${REPO_USER}/${DOCKER_REPOSITORY}:${DOCKER_IMAGE}
+  docker push ${DOCKER_REGISTRY}/${REPO_USER}/${DOCKER_REPOSITORY}:${DOCKER_IMAGE}-${ZAMMAD_VERSION}
+fi
diff --git a/.circleci/lint-scripts.sh b/.github/lint-scripts.sh
similarity index 84%
rename from .circleci/lint-scripts.sh
rename to .github/lint-scripts.sh
index da44ac63e..b03385df7 100755
--- a/.circleci/lint-scripts.sh
+++ b/.github/lint-scripts.sh
@@ -5,7 +5,8 @@
 
 set -o errexit
 
-CONFIG_DIR="./.circleci"
+CONFIG_DIR=".github"
+
 TMP_FILE="$(mktemp)"
 
 find "${CONFIG_DIR}" -type f -name "*.sh" > "${TMP_FILE}"
@@ -15,4 +16,3 @@ while read -r FILE; do
   shellcheck -x "${FILE}"
 done < "${TMP_FILE}"
 
-rm "${TMP_FILE}"
diff --git a/.github/workflows/build-docker-compose-images.yaml b/.github/workflows/build-docker-compose-images.yaml
new file mode 100644
index 000000000..0e56e0a44
--- /dev/null
+++ b/.github/workflows/build-docker-compose-images.yaml
@@ -0,0 +1,20 @@
+name: build-docker-compose-images
+
+on:
+  push:
+    branches: [stable]
+
+jobs:
+  build-docker-compose-images:
+    runs-on: ubuntu-latest
+    env:
+      DOCKER_IMAGES: "zammad zammad-elasticsearch zammad-postgresql"
+      DOCKER_PASSWORD: ${{ secrets.DOCKER_PASSWORD }}
+      DOCKER_REPOSITORY: "zammad-docker-compose"
+      DOCKER_USERNAME: ${{ secrets.DOCKER_USERNAME }}
+      GITHUB_REPOSITORY: "zammad-docker-compose"
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@master
+      - name: Build docker image
+        run: .github/docker-image-build.sh
diff --git a/.github/workflows/build-docker-image.yaml b/.github/workflows/build-docker-image.yaml
new file mode 100644
index 000000000..e23184c06
--- /dev/null
+++ b/.github/workflows/build-docker-image.yaml
@@ -0,0 +1,20 @@
+name: build-docker-image
+
+on:
+  push:
+    branches: [develop]
+
+jobs:
+  build-docker-image:
+    runs-on: ubuntu-latest
+    env:
+      DOCKER_IMAGES: "zammad"
+      DOCKER_PASSWORD: ${{ secrets.DOCKER_PASSWORD }}
+      DOCKER_REPOSITORY: "zammad"
+      DOCKER_USERNAME: ${{ secrets.DOCKER_USERNAME }}
+      GITHUB_REPOSITORY: "zammad-docker"
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@master
+      - name: Build docker image
+        run: .github/docker-image-build.sh
diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
new file mode 100644
index 000000000..11cff71f4
--- /dev/null
+++ b/.github/workflows/ci.yaml
@@ -0,0 +1,31 @@
+name: ci
+
+on: 
+  pull_request:
+
+jobs:
+  lint-bash-scripts:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v1
+      - name: Lint Bash scripts
+        uses: docker://koalaman/shellcheck-alpine:v0.7.0
+        with:
+          args: .github/lint-scripts.sh
+
+  ci:
+    runs-on: ubuntu-latest
+    needs: lint-scripts
+    strategy:
+      matrix:
+        dbs:
+          - mysql
+          - postgresql
+    env: 
+      ZAMMAD_DBS: ${{ matrix.dbs }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v1
+      - name: CI  
+        run: .github/ci.sh