Docker - /bin/sh: nodemon: 未找到

Question

我有以下 docker 文件。

#Dockerfile

FROM node:alpine

WORKDIR /backend

COPY package*.json .

RUN yarn

COPY . .

EXPOSE 5000

CMD ["yarn", "dev"]

Nodemon 在主机上按预期工作，但在运行容器时显示以下错误消息。

yarn run v1.22.5
$ nodemon
/bin/sh: nodemon: not found
error Command failed with exit code 127.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

Nodemon 未全局安装在主机中。在 Dockerfile 上添加RUN yarn add global nodemon 只是在容器错误中添加了一个额外的warning ../package.json: No license field。

我目前有以下带有以下开发依赖项的 package.json 文件

# package.json
...
"scripts": {
    "build": "tsc -p .",
    "start": "node ./dist/src/index.js",
    "dev": "nodemon",
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "devDependencies": {
    "@types/express": "^4.17.11",
    "@types/node": "^14.14.34",
    "nodemon": "^2.0.7",
    "ts-node": "^9.1.1",
    "typescript": "^4.2.3"
  },
...

和 nodemon.json 一样

{
    "watch": [
      "src"
    ],
    "ext": "ts,json",
    "ignore": [
        "src/**/*.spec.ts"
    ],
    "exec": "yarn ts-node src/index.ts"
  }

Answer 1

试试下面，

#Dockerfile

FROM node:alpine

WORKDIR /backend

COPY package*.json .

RUN yarn

RUN yarn add global nodemon

COPY . .

EXPOSE 5000

CMD ["yarn", "dev"]

旁注：最好不要在生产中使用nodemon。在 start 脚本中提供构建文件。您必须在 yarn start 之前添加 build 命令。

#Dockerfile

FROM node:alpine

WORKDIR /backend

COPY package*.json .

RUN yarn

COPY . .

RUN yarn run build

EXPOSE 5000

CMD ["yarn", "start"]