Docker In One Shot

docker-compose.yml

version: "3.8"

services:
  postgres:
    image: postgres # hub.docker.com
    ports:
      - "5432:5432"
    environment:
      POSTGRES_USER: postgres
      POSTGRES_DB: review
      POSTGRES_PASSWORD: password

  redis:
    image: redis
    ports:
      - "6379:6379"

Dockerfile

FROM ubuntu

RUN apt-get update
RUN apt-get install -y curl
RUN curl -sL https://deb.nodesource.com/setup_18.x | bash -
RUN apt-get upgrade -y
RUN apt-get install -y nodejs

COPY package.json package.json
COPY package-lock.json package-lock.json
COPY main.js main.js

RUN npm install

ENTRYPOINT [ "node", "main.js" ]

FROM node:18-alpine
WORKDIR /app
COPY package*.json ./
RUN npm ci --only=production
COPY . .
EXPOSE 3000
CMD ["node", "main.js"]

these is the most simplest way through which u too can build a dockerfile as its in smaller in size instead of using ubuntu in docker file

FROM ubuntu

Choose a base image (e.g., Ubuntu)

FROM ubuntu:22.04

RUN apt-get update && apt-get install -y curl gnupg
&& curl -sL https://deb.nodesource.com/setup_18.x | bash -
&& apt-get install -y nodejs
&& rm -rf /var/lib/apt/lists/*

COPY package.json package.json
COPY package-lock.json package-lock.json
COPY main.js main.js

RUN npm install

3. Fix ENTRYPOINT syntax (use square brackets and double quotes)

ENTRYPOINT ["node", "main.js"]