feat: single-container deployment & automated semantic versioning; add release workflow, version injection, health endpoint metadata, documentation

.github/workflows/docker-publish.yml

@@ -11,6 +11,7 @@ on:
     branches:
       - main
       - development
+  workflow_call:  # Allow this workflow to be called by other workflows
 
 env:
   REGISTRY: ghcr.io
@@ -56,6 +57,7 @@ jobs:
             type=sha,prefix={{branch}}-
 
       - name: Build and push Docker image
+        id: build-and-push
         uses: docker/build-push-action@v5
         with:
           context: .
@@ -66,9 +68,9 @@ jobs:
           cache-from: type=gha
           cache-to: type=gha,mode=max
           build-args: |
-            BUILD_DATE=${{ github.event.head_commit.timestamp }}
-            VCS_REF=${{ github.sha }}
             VERSION=${{ steps.meta.outputs.version }}
+            BUILD_DATE=${{ fromJSON(steps.meta.outputs.json).labels['org.opencontainers.image.created'] }}
+            VCS_REF=${{ github.sha }}
 
       - name: Image digest
         run: echo ${{ steps.build-and-push.outputs.digest }}