CODEWITHSUNDEEP
node.jsdockerpackage.jsonnodemonnpm-scripts
ammar26
ammar26

Reputation: 1612

Nodemon not working using npm script from package.json on Docker

I'm working with NodeJS and Nodemon on Docker. When I try to run my NodeJS app using nodemon command directly in docker compose file, it runs.

Like this (working): [docker-compose]

command: nodemon source/index.js

But when I use a script from package.json, it doesn't work

Like this (not-working): [docker-compose]

command: npm run dev

Where my package.json file is

"scripts": {
    "start": "node source/index.js",
    "dev": "nodemon source/index.js"
  }

I tried different things, when I simply run start script without nodemon, it works

Like this (working): [docker-compose]

command: npm run start

But when I try to use dev again with nodemon command inside it, it doesn't work. Container won't start. I have also tried the following and it also works

Like this (working): [docker-compose]

command: nodemon --exec npm start

I still don't understand, why nodemon command is not working inside script dev

I'm using Docker in Swarm Mode

Here are my both files

docker-compose

version: '3.7'

services:

    node-service:

        image: node-img:1.0

        ports:
        - 4000:4000

        working_dir: "/node-dir"

        volumes:
        - ./node-dir/source:/node-dir/source

        networks:
            - ness-net

        command: npm run dev

networks:

    ness-net:

package.json

{
  "name": "node-pkg",
  "version": "1.0.0",
  "main": "index.js",
  "scripts": {
    "start": "node source/index.js",
    "dev": "nodemon source/index.js"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "express": "^4.17.1"
  },
  "devDependencies": {
    "nodemon": "^1.19.4"
  }
}

Upvotes: 3

Views: 3281

Answers (4)

Shobhit Yadav
Shobhit Yadav

Reputation: 11

just add in package.json--->>

"scripts": {
    "dev":"nodemon -L app.js"
  }

in docker file--->>>

FROM node:latest

WORKDIR /app

COPY ./package*.json ./

RUN npm install

RUN npm install -g nodemon

COPY . .

EXPOSE 5500

CMD ["npm", "run","dev"]

run cmd-->>

docker build -t your_imge_name .

docker run --rm -d -p 5500:5500 -v %cd% --name your_container_name your_imge_name

Upvotes: 0

Haseeb Zahid
Haseeb Zahid

Reputation: 656

Just add the "." to define the path in your package.json like this

"scripts": {
    "start": "node ./source/index.js",
    "dev": "nodemon ./source/index.js"
  }

Upvotes: 2

zshan4444
zshan4444

Reputation: 430

Try this solution:

services:
 node-app:
  container_name: node-app
  image: node:latest
  restart: always
  volumes:
    - ./node/source:home/node/source
  working_dir: /home/node/source
  ports:
   - 4000:4000
  networks:
   - main-network
  command: "tail -f /dev/null && npm start"
  depends_on:
   - db
  logging:
    driver: "json-file"
    options:
     max-file: "4"
     max-size: "100m

Here is package.json

"main": "index.js",
"scripts": {
  "preinstall": "npm i nodemon -g",
  "start": "nodemon index.js",
}

Please make sure there should be index.js and package.json in working directory.

Upvotes: 0

Nassar
Nassar

Reputation: 11

You need to add an environment variable to point on npm when running nodemon C:\........\npm the path should be like this , and choose a name

Upvotes: 0

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