[GitHub] [superset] Yann-J commented on a diff in pull request #21954: build: Mutli-stage build and slim image for websocket container

[GitBox <gi...@apache.org>]

Yann-J commented on code in PR #21954:
URL: https://github.com/apache/superset/pull/21954#discussion_r1010047714


##########
superset-websocket/Dockerfile:
##########
@@ -12,13 +12,28 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-FROM node:16
+FROM node:16-alpine as build
 
 WORKDIR /home/superset-websocket
 
-COPY . .
+COPY . ./
 
-RUN npm ci
-RUN npm run build
+RUN npm ci && \
+  npm run build
 
-CMD ["npm", "start"]
+
+FROM node:16-alpine
+
+ENV NODE_ENV=production
+WORKDIR /home/superset-websocket
+
+COPY --from=build /home/superset-websocket/dist ./dist
+COPY package*.json ./
+
+# Only install production dependencies
+RUN npm install --omit=dev

Review Comment:
   It is because one of the objectives is to avoid having the devDependencies in the production image to keep it slim



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