docker - Dockerfile MKDIR不起作用(node:alpine)

Question

尝试使用以下文件创建/ app目录时出现错误。过去这对我有用，所以我不确定现在出了什么问题:

Step 1/8 : FROM node:alpine
 ---> 0d8a3475dbc3
Step 2/8 : RUN MKDIR -p "/app"
 ---> Running in ad24819ce982
/bin/sh: MKDIR: not found
ERROR: Service 'add_delete_server' failed to build: The command '/bin/sh -c MKDIR -p "/app"' returned a non-zero code: 127

Docker撰写:

version: "3.8"
services:

  add_delete_server:
    
    build:
      context: ./AddDeleteServer
      dockerfile: Dockerfile.dev
    ports:
      - "3001:3001"
    volumes:
      - /app/node_modules
      - ./server:/app

Dockerfile.dev

FROM node:alpine

#setting work directory
RUN MKDIR -p "/app"
WORKDIR "/app"

#copying only package.json first, so cache can be used for minor changes
COPY package.json .
COPY package-lock.json .
RUN npm install

# copy rest of files
COPY . .

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

但我无法产生

Answer 1

MKDIR不是命令，mkdir是命令