Dockerizing a vue.js app that use webpack - docker

Question

I dockerirized a vue.js app init by webpack, and run it with docker-compose. It runs with no problem in terminal, but when I go to the browser: "impossibile to reach ip".
I use docker-toolbox (thus, a VM).
First of all I make a new folder and execute the follow lines in order to init a new vue project using webpack:
npm install -g vue-cli
vue init webpack vueapp2
Now, if I run my applicatoin using npm run dev it works fine. In order to dockerizing it, I make a Dockerfile:
FROM node:alpine
RUN npm install -g vue-cli
WORKDIR '/app'
COPY ./package*.json ./
RUN npm install
COPY ./ ./
CMD [ "npm", "run", "dev"]
and a docker-compose.yml:
version: "3"
services:
node-app:
build: .
ports:
- "8080:8000"
In order to works with Docker using docker Toolbox, I have to map local-machine port to container-port (8080:8000). That's should works fine because I do similar things with a vue.js app serve by live-server succesfully (https://github.com/Aragorn1992gb/vue-liveserver-dockerized). But that's that use webpack no: it says "impossible to reach ip" when I digit container ip: http://192.168.99.100:8080/.
The line CMD [ "npm", "run", "dev"] on Dockerfile should execute command "npm run [script 'dev' staying on package.json]". That's my package.json:
{
"name": "vue-app2",
"version": "1.0.0",
"description": "A Vue.js project",
"author": "Aragorn1992gb <giacomobrunetta#gmail.com>",
"private": true,
"scripts": {
"dev": "webpack-dev-server --inline --progress --config build/webpack.dev.conf.js",
"start": "npm run dev",
"lint": "eslint --ext .js,.vue src",
"build": "node build/build.js"
},
"dependencies": {
"vue": "^2.5.2",
"vue-router": "^3.0.1"
},
"devDependencies": {
"autoprefixer": "^7.1.2",
"babel-core": "^6.22.1",
"babel-eslint": "^8.2.1",
"babel-helper-vue-jsx-merge-props": "^2.0.3",
"babel-loader": "^7.1.1",
"babel-plugin-syntax-jsx": "^6.18.0",
"babel-plugin-transform-runtime": "^6.22.0",
"babel-plugin-transform-vue-jsx": "^3.5.0",
"babel-preset-env": "^1.3.2",
"babel-preset-stage-2": "^6.22.0",
"chalk": "^2.0.1",
"copy-webpack-plugin": "^4.0.1",
"css-loader": "^0.28.0",
"eslint": "^4.15.0",
"eslint-config-standard": "^10.2.1",
"eslint-friendly-formatter": "^3.0.0",
"eslint-loader": "^1.7.1",
"eslint-plugin-import": "^2.7.0",
"eslint-plugin-node": "^5.2.0",
"eslint-plugin-promise": "^3.4.0",
"eslint-plugin-standard": "^3.0.1",
"eslint-plugin-vue": "^4.0.0",
"extract-text-webpack-plugin": "^3.0.0",
"file-loader": "^1.1.4",
"friendly-errors-webpack-plugin": "^1.6.1",
"html-webpack-plugin": "^2.30.1",
"node-notifier": "^5.1.2",
"optimize-css-assets-webpack-plugin": "^3.2.0",
"ora": "^1.2.0",
"portfinder": "^1.0.13",
"postcss-import": "^11.0.0",
"postcss-loader": "^2.0.8",
"postcss-url": "^7.2.1",
"rimraf": "^2.6.0",
"semver": "^5.3.0",
"shelljs": "^0.7.6",
"uglifyjs-webpack-plugin": "^1.1.1",
"url-loader": "^0.5.8",
"vue-loader": "^13.3.0",
"vue-style-loader": "^3.0.1",
"vue-template-compiler": "^2.5.2",
"webpack": "^3.6.0",
"webpack-bundle-analyzer": "^2.9.0",
"webpack-dev-server": "^2.9.1",
"webpack-merge": "^4.1.0"
},
"engines": {
"node": ">= 6.0.0",
"npm": ">= 3.0.0"
},
"browserslist": [
"> 1%",
"last 2 versions",
"not ie <= 8"
]
}
I found different solutions but without any success. One of the advise is it to add --host 0.0.0.0 to dev like this: "dev": "webpack-dev-server --host 0.0.0.0 --inline --progress --config build/webpack.dev.conf.js",, because it has to reach my docker ip, but stil not working. Actually must be a problem with that "dev" script, there is some problem to run it using dockerfile. This is my project on repo: https://github.com/Aragorn1992gb/vue-webapp-dockerizing

Answer 1

I just change contaner port from 8000 to 8080:
version: "3"
services:
node-app:
build: .
ports:
- "8080:8080"
Because on config/index.js the specified port is 8080. I can also change that port (i.e. 8000) and change it also in docker.compose.yml (i.e. 8080:8000).
Putting also --host 0.0.0.0 to dev, like that:
"dev": "webpack-dev-server --host 0.0.0.0 --inline --progress --config build/webpack.dev.conf.js",
Because webpack listen only on localhost container, I must allow requests from other interfaces (container ip)