Docker-compose node express container doesn't show error logs and restart continuously - express

Question

I am trying to make nginx, node express work on the container by using docker compose.
But problem is express container doesn't show any error log why it is died.
This is my docker-compose.yml
version: '3'
services:
proxy:
image: nginx:latest
container_name: proxy
ports:
- "80:80"
volumes:
- ./proxy/nginx.conf:/etc/nginx/nginx.conf
restart: "unless-stopped"
express:
build:
context: ./server
container_name: express
expose:
- "3000"
volumes:
- ./source:/source
- /source/node_modules
restart: "unless-stopped"
This is my directory structure.
source directory, i move all files and directories from express-generator outputs.
This is my Dockerfile.
FROM node:12
COPY package*.json /source/
WORKDIR /source
RUN npm install
CMD [ "node", "app.js" ]
This is my package.json
{
"name": "docker_web_app",
"version": "1.0.0",
"description": "",
"main": "server.js",
"scripts": {
"start": "node app.js",
"test": "echo \"Error: no test specified\" && exit 1"
},
"keywords": [],
"author": "sjk5766",
"license": "ISC",
"dependencies": {
"cookie-parser": "~1.4.4",
"debug": "~2.6.9",
"express": "~4.16.1",
"http-errors": "~1.6.3",
"jade": "~1.11.0",
"morgan": "~1.9.1"
}
}
When i did docker ps after docker-compose up -d, result is like below.
When i did docker logs express, there is nothing i can see.
I really wanna know what is the problem.

Answer 1

Considering your express application is running fine without docker.
you can change your Dockerfile as below
FROM node:12
WORKDIR /source
COPY . .
RUN npm install
EXPOSE 3000
CMD [ "node", "app.js" ]
COPY command will copy your local directory code to /server directory in docker
try docker-compose file as below
version: '3'
services:
proxy:
image: nginx:latest
container_name: proxy
ports:
- "80:80"
volumes:
- ./proxy/nginx.conf:/etc/nginx/nginx.conf
networks:
- test_bridge
restart: "unless-stopped"
express:
build: ./server
container_name: express
ports:
- "3000:3000"
networks:
- test_bridge
networks:
test_bridge:
driver: bridge