diff --git a/hooks/build b/hooks/build
index d110132..e04b4c2 100755
--- a/hooks/build
+++ b/hooks/build
@@ -9,13 +9,13 @@ set -ex
 
 for DOCKER_IMAGE in ${DOCKER_IMAGES}; do
   if [ ${TRAVIS} == 'true' ]; then
-    echo "Build Zammad Docker image ${DOCKER_IMAGE} with version ${TRAVIS_BUILD_NUMBER} for DockerHubs ${DOCKER_REGISTRY}/${DOCKER_USERNAME}/${DOCKER_REPOSITORY}:${DOCKER_IMAGE} repo"
+    echo "Build Zammad Docker image ${DOCKER_IMAGE} with version ${TRAVIS_BUILD_NUMBER} for DockerHubs ${DOCKER_REGISTRY}/${GITHUB_USERNAME}/${DOCKER_REPOSITORY}:${DOCKER_IMAGE} repo"
 
-    docker build --pull --no-cache --build-arg BUILD_DATE=$(date -u +”%Y-%m-%dT%H:%M:%SZ”) -t ${DOCKER_REGISTRY}/${DOCKER_USERNAME}/${DOCKER_REPOSITORY}:${DOCKER_IMAGE} -t ${DOCKER_REGISTRY}/${DOCKER_USERNAME}/${DOCKER_REPOSITORY}:${DOCKER_IMAGE}-${TRAVIS_BUILD_NUMBER} -f containers/${DOCKER_IMAGE}/Dockerfile .
+    docker build --pull --no-cache --build-arg BUILD_DATE=$(date -u +”%Y-%m-%dT%H:%M:%SZ”) -t ${DOCKER_REGISTRY}/${GITHUB_USERNAME}/${DOCKER_REPOSITORY}:${DOCKER_IMAGE} -t ${DOCKER_REGISTRY}/${GITHUB_USERNAME}/${DOCKER_REPOSITORY}:${DOCKER_IMAGE}-${TRAVIS_BUILD_NUMBER} -f containers/${DOCKER_IMAGE}/Dockerfile .
 
-    docker push ${DOCKER_REGISTRY}/${DOCKER_USERNAME}/${DOCKER_REPOSITORY}:${DOCKER_IMAGE}
+    docker push ${DOCKER_REGISTRY}/${GITHUB_USERNAME}/${DOCKER_REPOSITORY}:${DOCKER_IMAGE}
 
-    docker push ${DOCKER_REGISTRY}/${DOCKER_USERNAME}/${DOCKER_REPOSITORY}:${DOCKER_IMAGE}-${TRAVIS_BUILD_NUMBER}
+    docker push ${DOCKER_REGISTRY}/${GITHUB_USERNAME}/${DOCKER_REPOSITORY}:${DOCKER_IMAGE}-${TRAVIS_BUILD_NUMBER}
   else
     echo "Build Zammad Docker image ${DOCKER_IMAGE} for DockerHubs ${DOCKER_REPO}:${DOCKER_IMAGE} repo"