I have a react running in this docker container, but for whatever reason “npm install” and “npm run build” are not being ran automatically once i run “docker-compose up –build”. I have had to go into my react container and run them in order for my build to be live in the container. I know these commands are not being ran because once I get into my container, I do not have a node_modules directory or a build directory. In order to get these directories to appear, I have to manually run npm i and npm run build.

Dockerfile

FROM node:14 AS build

WORKDIR /app

COPY package.json ./
COPY package-lock.json ./

RUN npm install

COPY . .

RUN npm run build

RUN npm install -g serve

ENV REACT_APP_DIR /app/build

EXPOSE 80

CMD ["serve", "-s", "build", "-l", "80"]

DOCKER-COMPOSE.yaml

services:
  django:
    build:
      context: ./customerAPI/  # Path to your Django app
      dockerfile: Dockerfile
    container_name: django
    command: python manage.py runserver 0.0.0.0:8000
    volumes:
      - ./customerAPI:/app
    ports:
      - "8000:8000"

  react:
    build:
      context: ./reactAirxcelPortal  # Path to your React app
      dockerfile: Dockerfile
    container_name: react
    volumes:
      - ./reactAirxcelPortal:/app
    ports:
      - "80:80"

I have tried most of the solutions online, and everyone’s dockerfile looks similar to mine yet mine will not build automatically. I have tried chatGPT and several stackoverflow entries but no dice.