Add CI/CD for auto-deployment of blog

.gitea/workflows/deploy.yml

@@ -0,0 +1,46 @@
+name: Deploy to Nomad
+
+on:
+  workflow_run:
+    workflows: ["Build and Push Docker Image"]
+    types:
+      - completed
+
+env:
+  NOMAD_ADDR: ${{ secrets.NOMAD_ADDR }}
+  NOMAD_TOKEN: ${{ secrets.NOMAD_TOKEN }}
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Get image tag from git SHA
+        id: tag
+        run: |
+          image_tag=$(git rev-parse --short HEAD)
+          echo "image_tag=$image_tag" >> $GITHUB_OUTPUT
+
+      - name: Update image tag in job definition
+        run: |
+          # Replace the image tag placeholder with actual tag
+          jq '.Job.TaskGroups[0].Tasks[0].Config.image |= sub(":.*"; ":${{ steps.tag.outputs.image_tag }}")' \
+            blog.nomad.json > blog.nomad.final.json
+
+      - name: Submit job via Nomad API
+        run: |
+          curl -s -X POST \
+            -H "X-Nomad-Token: ${{ env.NOMAD_TOKEN }}" \
+            -H "Content-Type: application/json" \
+            -d @blog.nomad.final.json \
+            "${{ env.NOMAD_ADDR }}/v1/jobs"
+
+      - name: Verify deployment
+        run: |
+          echo "Waiting for deployment to stabilize..."
+          sleep 5
+          curl -X GET \
+            -H "X-Nomad-Token: ${{ env.NOMAD_TOKEN }}" \
+            "${{ env.NOMAD_ADDR }}/v1/job/blog"