Docker - Cannot find module in docker container log - node.js

Question

I got this error in docker desktop in docker containers logs.
I run this command in terminal of vs code
docker compose up
This is the error:
> tracking-system#1.0.0 dev /usr/src/server
> nodemon -r esm -L server.js
[nodemon] 2.0.7
[nodemon] to restart at any time, enter `rs`
[nodemon] watching path(s): *.*
[nodemon] watching extensions: js,mjs,json
[nodemon] starting `node -r esm server.js server.js`
[nodemon] app crashed - waiting for file changes before starting...
Error: Cannot find module '/usr/src/server/server.js'
at internal/main/run_main_module.js:17:47 {
code: 'MODULE_NOT_FOUND',
requireStack: []
}
This is all my files in my project
app (folder)
node_modules (folder)
.dockerignore
.gitignore
Dockerfile
Dockerfile.prod
package.json
package-lock.json
server.js
This is my code:
server.js:
import express from 'express';
import mongoose from 'mongoose';
import cors from 'cors';
import passport from 'passport';
import morgan from 'morgan';
import socketio from 'socket.io';
import http from 'http';
import { success, error } from 'consola';
import { db_connection } from './app/config';
const app = express();
const server = http.createServer(app);
const io = socketio(server);
const PORT = process.env.SERVER_PORT || 8861;
var corsOptions = {
origin: '*',
optionsSuccessStatus: 200, // some legacy browsers (IE11, various SmartTVs) choke on 204
credentials: true,
};
app.use(cors(corsOptions));
app.use(express.json());
app.use(passport.initialize());
app.use(morgan('dev'));
import passport_init from './app/middleware/passport';
import userRoute from './app/routes/user.route';
import authRoute from './app/routes/auth.route';
passport_init(passport);
app.use('/api/users', userRoute);
app.use('/api/auth', authRoute);
const startDatabase = async () => {
try {
await mongoose.connect(db_connection, {
useNewUrlParser: true,
useFindAndModify: true,
useUnifiedTopology: true,
useFindAndModify: false,
dbName: 'tracking-system',
});
success({
message: `Successfully connected with the database on ${db_connection}`,
badge: true,
});
} catch (err) {
error({
message: `Unable to connected with the database ${err}`,
badge: true,
});
setTimeout(startDatabase, 5000);
}
};
startDatabase();
server.listen(PORT, () => {
success({ message: `Server started on PORT ${PORT}`, badge: true });
});
io.on('connection', socket => {
console.log(`Connected: ${socket.id}`)
socket.on('disconnect', () => {
console.log(`Disconnected: ${socket.id}`)
})
socket.on('update-worksheet', function () {
io.sockets.emit('update-landing-page')
})
})
Dockerfile:
FROM node:lts-buster
WORKDIR /project/server
COPY ./server/package*.json ./
RUN npm install
COPY ./.env ../.env
CMD ["npm", "run", "dev"]
package.json:
{
"name": "tracking-system",
"version": "1.0.0",
"description": "for tracking device repairation",
"main": "server.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1",
"start": "node -r esm server.js",
"dev": "nodemon -r esm -L server.js"
},
"author": "",
"license": "ISC",
"dependencies": {
"bcrypt": "5.0.1",
"colors": "^1.4.0",
"consola": "^2.15.3",
"cookie-parser": "^1.4.5",
"cors": "^2.8.5",
"dotenv": "^10.0.0",
"esm": "^3.2.25",
"express": "^4.17.1",
"express-session": "^1.17.2",
"http-server": "^0.12.3",
"jsonwebtoken": "^8.5.1",
"moment-timezone": "^0.5.33",
"mongoose": "^5.13.5",
"morgan": "^1.10.0",
"passport": "^0.4.1",
"passport-jwt": "^4.0.0",
"socket.io": "^4.1.3"
},
"devDependencies": {
"nodemon": "^2.0.7"
}
}
Thanks if you can help. My friend can't help.
This is my docker version:
Docker version 20.10.7, build f0df350
This is my docker info:
Client:
Context: default
Debug Mode: false
Plugins:
buildx: Build with BuildKit (Docker Inc., v0.5.1-docker)
compose: Docker Compose (Docker Inc., v2.0.0-beta.6)
scan: Docker Scan (Docker Inc., v0.8.0)
Server:
Containers: 4
Running: 4
Paused: 0
Stopped: 0
Images: 4
Server Version: 20.10.7
Storage Driver: overlay2
Backing Filesystem: extfs
Supports d_type: true
Native Overlay Diff: true
userxattr: false
Logging Driver: json-file
Cgroup Driver: cgroupfs
Cgroup Version: 1
Plugins:
Volume: local
Network: bridge host ipvlan macvlan null overlay
Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
Swarm: inactive
Runtimes: io.containerd.runc.v2 io.containerd.runtime.v1.linux runc
Default Runtime: runc
Init Binary: docker-init
containerd version: d71fcd7d8303cbf684402823e425e9dd2e99285d
runc version: b9ee9c6314599f1b4a7f497e1f1f856fe433d3b7
init version: de40ad0
Security Options:
seccomp
Profile: default
Kernel Version: 5.10.16.3-microsoft-standard-WSL2
Operating System: Docker Desktop
OSType: linux
Architecture: x86_64
CPUs: 12
Total Memory: 12.43GiB
Name: docker-desktop
ID: LASO:BRSF:IIDP:3W6O:4TRG:CRIF:H54G:WWN3:EFAP:6NLU:MMSS:OHG5
Docker Root Dir: /var/lib/docker
Debug Mode: false
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
127.0.0.0/8
Live Restore Enabled: false
WARNING: No blkio throttle.read_bps_device support
WARNING: No blkio throttle.write_bps_device support
WARNING: No blkio throttle.read_iops_device support
WARNING: No blkio throttle.write_iops_device support
I use windows 10 pro

Answer 1

In the line 3 in your Dockerfile you only copy the package.json of your project but never copy the source code of your app.
FROM node:lts-buster
WORKDIR /project/server
COPY ./server/package*.json ./
RUN npm install
COPY ./.env ../.env
CMD ["npm", "run", "dev"]
So, you can try with this Dockerfile (i changed the workdir and now it copying all source code):
FROM node:lts-buster
WORKDIR /usr/src/server
COPY . .
RUN npm install
CMD ["npm", "run", "dev"]
Reference: Dockerizing a Node.js web app