refac:updated ci/cd pipeline to create docker images with timestamp and commit sha

.gitea/workflows/develop.yml

@@ -20,17 +20,20 @@ jobs:
             - name: Checkout code
               uses: actions/checkout@v4
 
-            - name: Resolve commit SHA
+            - name: Resolve image tag
               id: vars
               run: |
                   # For PRs, gitea.sha is a temporary merge commit — use the real
                   # PR head commit instead so tags map to actual git history.
                   FULL_SHA="${{ gitea.event.pull_request.head.sha || gitea.sha }}"
-                  echo "sha=${FULL_SHA:0:7}" >> "$GITHUB_OUTPUT"
+                  SHORT_SHA="${FULL_SHA:0:7}"
+                  BUILD_TIME=$(date -u +%Y%m%d-%H%M%S)
+                  echo "sha=${SHORT_SHA}" >> "$GITHUB_OUTPUT"
+                  echo "tag=${BUILD_TIME}-${SHORT_SHA}" >> "$GITHUB_OUTPUT"
 
-            - name: Build Docker image (tagged by commit SHA)
+            - name: Build Docker image (tagged by UTC build time and commit SHA)
               run: |
-                  docker build -t robot-market:${{ steps.vars.outputs.sha }} .
+                  docker build -t robot-market:${{ steps.vars.outputs.tag }} .
 
             - name: Save previous tag for rollback
               id: backup
@@ -42,7 +45,7 @@ jobs:
 
             - name: Point compose at this build
               run: |
-                  echo "IMAGE_TAG=${{ steps.vars.outputs.sha }}" > /opt/robot-market-front/.env
+                  echo "IMAGE_TAG=${{ steps.vars.outputs.tag }}" > /opt/robot-market-front/.env
 
             - name: Deploy via compose
               id: deploy
@@ -85,7 +88,7 @@ jobs:
             - name: Clean up dangling (untagged) layers
               run: docker image prune -f
 
-            - name: Prune old SHA-tagged images (keep last 5)
+            - name: Prune old build-tagged images (keep last 5)
               run: |
                   KEEP=5
                   CURRENT_TAG=$(grep IMAGE_TAG /opt/robot-market-front/.env 2>/dev/null | cut -d= -f2)

.gitea/workflows/rollback.yml

@@ -2,7 +2,8 @@ name: Rollback (develop)
 
 # Trigger manually from the Gitea Actions UI.
 # Leave "sha" empty to roll back to the previous deploy.
-# Fill "sha" in (short 7-char form, e.g. a3f9c21) to roll back to a specific past build.
+# Fill "sha" in (short 7-char form, e.g. a3f9c21) to roll back to the newest
+# build for that commit. Build tags include a UTC timestamp and commit SHA.
 on:
     workflow_dispatch:
         inputs:
@@ -18,7 +19,15 @@ jobs:
             - name: Determine target tag
               run: |
                   if [ -n "${{ gitea.event.inputs.sha }}" ]; then
-                    TAG="${{ gitea.event.inputs.sha }}"
+                    SHA="${{ gitea.event.inputs.sha }}"
+                    TAG=$(docker images robot-market --format '{{.Tag}}' \
+                      | grep -E "-${SHA}$" \
+                      | sort -r \
+                      | head -n 1)
+                    # Keep accepting legacy SHA-only tags created before timestamped tags.
+                    if [ -z "$TAG" ]; then
+                      TAG="$SHA"
+                    fi
                   else
                     TAG=$(grep IMAGE_TAG /opt/robot-market-front/.env.previous | cut -d= -f2)
                   fi