CMD is used to run npmstart (port 3000) and node./server/server.js (port 8080) in Dockerfile.
Dockerfile:
FROM node:8.9-alpine
ENV NODE_ENV production
WORKDIR /usr/src/app
COPY ["package.json", "package-lock.json*", "npm-shrinkwrap.json*", "./"]
RUN npm install --production --silent && mv node_modules ../
COPY . .
CMD [ "npm", "start", "node", "./server/server.js" ]Only 3000 ports can be opened locally
Project directory:
docker-compose.yml:
version: '2.1'
services:
chat:
image: chat
container_name: chat
build: .
environment:
NODE_ENV: production
ports:
- "3000:3000"
- "8080:8080"
volumes:
- ./:/usr/src/app
links:
- mongo
mongo:
container_name: mongo
image: mongo
ports:
- "27017:27017"There are two ways. One is CMD does not use brackets to frame the commands and links them with “&&”symbols.
# Use nohup box, otherwise npm start will not execute the following after it is executed CMD nohup sh -c 'npm start && node ./server/server.js'Another method is to use the ENTRYPOINT command instead of CMD to specify an executed shell script, and then write the command to be executed in the entrypoint.sh file:
ENTRYPOINT ["./entrypoint.sh"]Sh file is as follows:
// entrypoint.sh nohup npm start & nohup node ./server/server.js &I hope I can help you.