Add production image build

Taskfile.yml

@@ -106,3 +106,14 @@ tasks:
       POST_DATE:
         sh: date +'%Y-%m-%d'
     cmd: touch "source/_articles/{{.POST_DATE}}-new-post.md"
+
+  deploy:
+    vars:
+      COMMIT_HASH:
+        sh: git rev-parse --short HEAD
+      TIMESTAMP:
+        sh: date +%s
+      IMAGE_TAG: homepage-nginx:{{.COMMIT_HASH}}-{{.TIMESTAMP}}
+    cmds:
+      - task: build-prod
+      - docker build --pull --file docker/Dockerfile.nginx.prod --tag {{.IMAGE_TAG}} .