feat: add tiflow-engine docker image (#219)

- as title

Signed-off-by: lijie <[email protected]>

packages/packages.yaml.tmpl

@@ -1276,6 +1276,7 @@ components:
                 npm install -g yarn
             - script: |
                 make cdc dm-master-with-webui dm-worker dmctl dm-syncer
+                sed '/RUN make engine/ i  ENV GOPROXY=http://goproxy.pingcap.net,https://goproxy.cn,direct' -i deployments/engine/docker/Dockerfile
         artifacts:
           - name: "cdc-{{ .Release.version }}-{{ .Release.os }}-{{ .Release.arch }}.tar.gz"
             files:
@@ -1364,6 +1365,12 @@ components:
               - name: dmctl
                 src:
                   path: bin/dmctl
+          - name: container image - tiflow-engine
+            type: image
+            artifactory:
+              repo: hub.pingcap.net/pingcap/tiflow/images/tiflow
+            context: . # just build under git repo folder.
+            dockerfile: deployments/engine/docker/Dockerfile
       - description: interpret versions according to semantic version spec.
         if: {{ semver.CheckConstraint "~6.5.6-0" .Release.version }}
         os: [linux]