如何从头开始在Docker容器中构建新应用程序？

大佬教程收集整理的这篇文章主要介绍了如何从头开始在Docker容器中构建新应用程序？ ，大佬教程大佬觉得挺不错的，现在分享给大家，也给大家做个参考。

FROM node:10-alpine

workdir /usr/src/app

copY package*.json ./
RUN npm install

copY . .

CMD [ "npm","start" ]

version: '3'

services:
  example-service:
    build: .
    volumes:
      - .:/usr/src/app
      - /usr/src/app/node_modules
    ports:
      - 3000:3000
      - 9229:9229
    command: npm start

dev:
  docker-compose up

它确实使用Docker本身进行开发,而不仅仅是部署/运行NodeJS应用程序.

例：

# This will use the node:8.11.4-alpine image to run `npm init`
# with the current directory mounted into the container.
#
# Follow the prompts to create your package.json
docker run --init --rm -it -v "${PWD}:/src" -w /src node:8.11.4-alpine npm init

然后,您可以使用以下命令设置执行环境：

FROM node:8.11.4-alpine AS dev
workdir /usr/src/app
ENV NODE_ENV development
copY . .
# You Could use `yarn install` if you prefer.
RUN npm install

并构建您的应用程序：

# replace YOUR-NAMESPACE/YOUR-IMAGE with the name you would like to use.
docker build -t YOUR-NAMESPACE/YOUR-IMAGE:dev --target dev .

并运行它：

# The `YOUR COMMAND` portion can be replaced with whatever command you
# would like to use in your container.
docker run --rm -it --init -v "${PWD}:/usr/src/app" YOUR-NAMESPACE/YOUR-IMAGE:dev YOUR COMMAND

全部没有在工作站上安装节点！