Merge pull request #39 from LibreCodeCoop/codex/find-daily-usage-of-build-workflow-9vf4aw

Fix SHA tag prefix in Docker metadata to prevent invalid image tags

Author: henmohr

.github/workflows/docker-image.yml

@@ -46,7 +46,7 @@ jobs:
           tags: |
             type=ref,event=branch
             type=ref,event=pr
-            type=sha,prefix={{branch}}-
+            type=sha,prefix=sha-
             type=raw,value=latest,enable={{is_default_branch}}
             type=semver,pattern={{version}}
             type=semver,pattern={{major}}.{{minor}}
@@ -70,7 +70,7 @@ jobs:
           tags: |
             type=ref,event=branch
             type=ref,event=pr
-            type=sha,prefix={{branch}}-
+            type=sha,prefix=sha-
             type=raw,value=latest,enable={{is_default_branch}}
             type=semver,pattern={{version}}
             type=semver,pattern={{major}}.{{minor}}