diff --git a/.github/docker-image-build.sh b/.github/docker-image-build.sh
index 2bed228d2..f53c41583 100755
--- a/.github/docker-image-build.sh
+++ b/.github/docker-image-build.sh
@@ -14,10 +14,10 @@ ZAMMAD_VERSION="$(git describe --tags | sed -e 's/-[a-z0-9]\{8,\}.*//g')"
 echo "${DOCKER_PASSWORD}" | docker login --username="${DOCKER_USERNAME}" --password-stdin
 
 # clone docker repo
-git clone https://github.com/"${REPO_USER}"/"${GITHUB_REPOSITORY}"
+git clone https://github.com/"${REPO_USER}"/"${DOCKER_GITHUB_REPOSITORY}"
 
 # enter dockerfile dir
-cd "${REPO_ROOT}/${GITHUB_REPOSITORY}"
+cd "${REPO_ROOT}/${DOCKER_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"
@@ -26,7 +26,7 @@ for DOCKER_IMAGE in ${DOCKER_IMAGES}; do
     docker build --pull --no-cache --build-arg BUILD_DATE="$(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} .     
+    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}
diff --git a/.github/workflows/build-docker-compose-images.yaml b/.github/workflows/build-docker-compose-images.yaml
index 57fd67ce6..a673fc1bb 100644
--- a/.github/workflows/build-docker-compose-images.yaml
+++ b/.github/workflows/build-docker-compose-images.yaml
@@ -12,7 +12,7 @@ jobs:
       DOCKER_PASSWORD: ${{ secrets.DOCKER_PASSWORD }}
       DOCKER_REPOSITORY: "zammad-docker-compose"
       DOCKER_USERNAME: ${{ secrets.DOCKER_USERNAME }}
-      GITHUB_REPOSITORY: "zammad-docker-compose"
+      DOCKER_GITHUB_REPOSITORY: "zammad-docker-compose"
     steps:
       - name: Checkout code
         uses: actions/checkout@master
diff --git a/.github/workflows/build-docker-image.yaml b/.github/workflows/build-docker-image.yaml
index 940f7d249..0d9c76254 100644
--- a/.github/workflows/build-docker-image.yaml
+++ b/.github/workflows/build-docker-image.yaml
@@ -12,7 +12,7 @@ jobs:
       DOCKER_PASSWORD: ${{ secrets.DOCKER_PASSWORD }}
       DOCKER_REPOSITORY: "zammad"
       DOCKER_USERNAME: ${{ secrets.DOCKER_USERNAME }}
-      GITHUB_REPOSITORY: "zammad-docker"
+      DOCKER_GITHUB_REPOSITORY: "zammad-docker"
     steps:
       - name: Checkout code
         uses: actions/checkout@master