organize the image publishing/tagging process better

Every image gets pushed with a unique version-branch tag by default and
then the version and latest tags get only tagged from the main branch
and the main branch and the desired version respectively.

.woodpecker/keycloak.yaml

@@ -28,6 +28,7 @@ steps:
     image: alpine
     commands:
       - mkdir /woodpecker/images
+
   - name: build-image
     image: gcr.io/kaniko-project/executor
     entrypoint:
@@ -38,6 +39,7 @@ steps:
       - --destination=${IMAGE_NAME}:${KEYCLOAK_VERSION}
       - --no-push
       - --tar-path=/woodpecker/images/keycloak.tar
+
   - name: publish-image
     image: alpine
     secrets:
@@ -45,16 +47,27 @@ steps:
     commands:
       - apk -u add crane
       - crane auth login git.hamburg.ccc.de -u woodpecker -p $GIT_API_TOKEN
-      - crane push /woodpecker/images/keycloak.tar $IMAGE_NAME:$KEYCLOAK_VERSION
-  - name: tag-branch-and-latest
+      - crane push /woodpecker/images/keycloak.tar $IMAGE_NAME:$KEYCLOAK_VERSION-$CI_COMMIT_BRANCH
+
+  - name: tag-version
     image: alpine
     when:
       - branch: main
-      - evaluate: 'KEYCLOAK_VERSION == "25.0"'
     secrets:
       - GIT_API_TOKEN
     commands:
       - apk -u add crane
       - crane auth login git.hamburg.ccc.de -u woodpecker -p $GIT_API_TOKEN
-      - crane tag $IMAGE_NAME:$KEYCLOAK_VERSION $CI_COMMIT_BRANCH
-      - crane tag $IMAGE_NAME:$KEYCLOAK_VERSION latest
+      - crane tag $IMAGE_NAME:$KEYCLOAK_VERSION-$CI_COMMIT_BRANCH $KEYCLOAK_VERSION
+
+  - name: tag-latest
+    image: alpine
+    when:
+      - branch: main
+        evaluate: 'KEYCLOAK_VERSION == "25.0"'
+    secrets:
+      - GIT_API_TOKEN
+    commands:
+      - apk -u add crane
+      - crane auth login git.hamburg.ccc.de -u woodpecker -p $GIT_API_TOKEN
+      - crane tag $IMAGE_NAME:$KEYCLOAK_VERSION-$CI_COMMIT_BRANCH latest

.woodpecker/nextcloud.yaml

@@ -48,9 +48,20 @@ steps:
     commands:
       - apk -u add crane
       - crane auth login git.hamburg.ccc.de -u woodpecker -p $GIT_API_TOKEN
-      - crane push /woodpecker/images/nextcloud.tar $IMAGE_NAME:$NEXTCLOUD_VERSION
+      - crane push /woodpecker/images/nextcloud.tar $IMAGE_NAME:$NEXTCLOUD_VERSION-$CI_COMMIT_BRANCH
 
-  - name: tag-branch-and-latest
+  - name: tag-version
+    image: docker.io/library/alpine
+    when:
+      - branch: main
+    secrets:
+      - GIT_API_TOKEN
+    commands:
+      - apk -u add crane
+      - crane auth login git.hamburg.ccc.de -u woodpecker -p $GIT_API_TOKEN
+      - crane tag $IMAGE_NAME:$NEXTCLOUD_VERSION-$CI_COMMIT_BRANCH $NEXTCLOUD_VERSION
+
+  - name: tag-latest
     image: docker.io/library/alpine
     when:
       - branch: main
@@ -60,5 +71,4 @@ steps:
     commands:
       - apk -u add crane
       - crane auth login git.hamburg.ccc.de -u woodpecker -p $GIT_API_TOKEN
-      - crane tag $IMAGE_NAME:$NEXTCLOUD_VERSION $CI_COMMIT_BRANCH
-      - crane tag $IMAGE_NAME:$NEXTCLOUD_VERSION latest
+      - crane tag $IMAGE_NAME:$NEXTCLOUD_VERSION-$CI_COMMIT_BRANCH latest