Why is npm install not working inside docker?-CodePudding

I own an Asustor and I want to dockerise my node js app to be able to run any time. I followed official tutorial from nodejs but it's not working as intended on my nas, while on my computer everything is fine.

Here is my Dockerfile :

FROM node:latest
WORKDIR /app
COPY package*.json ./
RUN npm install
COPY . .
EXPOSE 8080
CMD ["node", "app.js"]

And here is the error I'm getting on the nas :

Sending build context to Docker daemon  45.57kB
Step 1/7 : FROM node:latest
 ---> b254e440661a
Step 2/7 : WORKDIR /app
 ---> Running in 4ddb713a2c92
Removing intermediate container 4ddb713a2c92
 ---> 7956afe6d600
Step 3/7 : COPY package*.json ./
 ---> 9a814bfae80d
Step 4/7 : RUN npm install
 ---> Running in 477d3abd6312
node:internal/fs/utils:347
    throw err;
    ^

Error: ENOENT: no such file or directory, open '/usr/local/lib/cli.js'
    at Object.openSync (node:fs:591:3)
    at Object.readFileSync (node:fs:459:35)
    at Module._extensions..js (node:internal/modules/cjs/loader:1222:18)
    at Module.load (node:internal/modules/cjs/loader:1068:32)
    at Module._load (node:internal/modules/cjs/loader:909:12)
    at Module.require (node:internal/modules/cjs/loader:1092:19)
    at require (node:internal/modules/cjs/helpers:103:18)
    at Object.<anonymous> (/usr/local/bin/npm:2:1)
    at Module._compile (node:internal/modules/cjs/loader:1205:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1259:10) {
  errno: -2,
  syscall: 'open',
  code: 'ENOENT',
  path: '/usr/local/lib/cli.js'
}

Node.js v19.1.0
The command '/bin/sh -c npm install' returned a non-zero code: 1

CodePudding user response：

From the official guide you've sent, you can clearly see in the following link, I highlighted the version they used in the main guide and in your Dockerfile your using FROM node:latest meanwhile they are using node:10 can you please edit your Dockerfile and change the latest to 10 in order to fix node version to the

CodePudding user response：

Sorry, cannot reproduce!

Sticking to example/combining with your Dockerfile:

mkdir test-project && cd test-project.

package.json:

{
  "name": "docker_web_app",
  "version": "1.0.0",
  "description": "Node.js on Docker",
  "author": "First Last <[email protected]>",
  "main": "server.js",
  "scripts": {
    "start": "node server.js"
  },
  "dependencies": {
    "express": "^4.16.1"
  }
}

server.js (according to package.json, not app.js!):

'use strict';

const express = require('express');

// Constants
const PORT = 8080;
const HOST = '0.0.0.0';

// App
const app = express();
app.get('/', (req, res) => {
  res.send('Hello World');
});

app.listen(PORT, HOST, () => {
  console.log(`Running on http://${HOST}:${PORT}`);
});

Dockerfile (basically yours, subtle difference: server.js vs. app.js):

FROM node:latest
WORKDIR /app
COPY package*.json ./
RUN npm install
COPY . .
EXPOSE 8080
CMD ["node", "server.js"]

(.dockerignore:
```
node_modules
npm-debug.log
```
, but also without trying npm locally)
docker build . -t bruce/node-docker-demo (takes a few minutes, but succeeds).
Verify with docker images.
Run with docker run -p 49160:8080 -d bruce/node-docker-demo.
Get Container ID via docker ps.
Get logs via docker logs <container_id>:
```
Running on http://0.0.0.0:8080
```

Finally test with curl -i localhost:49160.

HTTP/1.1 200 OK
X-Powered-By: Express
Content-Type: text/html; charset=utf-8
Content-Length: 11
ETag: W/"b-Ck1VqNd45QIvq3AZd8XYQLvEhtA"
Date: Mon, 28 Nov 2022 18:05:26 GMT
Connection: keep-alive
Keep-Alive: timeout=5

Hello World