1分で環境立上げ - create-react-app & typescript & yarn & dockerを実行するまで

FROM node:14-alpine AS builder

# set working directory
WORKDIR /app

# Copies package.json and yarn.lock to Docker environment
COPY package.json ./
COPY yarn.lock ./

# Install `serve` to run the application.
RUN npm install -g serve
# Installs all node packages
RUN yarn install --frozen-lockfile

# Copies everything over to Docker environment
COPY . .

# Build for production.
RUN yarn build

# Uses port which is used by the actual application
EXPOSE 5000

# Run application
#CMD [ "npm", "start" ]
CMD serve -s build

version: "3"

services:
  my_webapp:
    build:
      context: .
    volumes:
      - ./src:/app/src # 多分これはいらないかも。
    ports:
      - "5000:5000"