Ejemplos de Dockerfile

Para deploy de node.js app 

 FROM node:10

# Create app directory

WORKDIR /usr/src/app

# Install app dependencies

# A wildcard is used to ensure both package.json AND package-lock.json are copied

# where available (npm@5+)

COPY package*.json ./

RUN npm install

# If you are building your code for production

# RUN npm ci --only=production

# Bundle app source

COPY . .

EXPOSE 8080

CMD [ "npm", "start" ] 

 Para deploy de django app, las dependencias deben estar en el Pipfile 

 # Pull base image

FROM python:3.7-slim

# Set environment varibles

ENV PYTHONDONTWRITEBYTECODE 1

ENV PYTHONUNBUFFERED 1

# Set work directory

WORKDIR /code

# Install dependencies

RUN pip install pipenv

COPY Pipfile Pipfile.lock /code/

RUN pipenv install --system

# Copy project

COPY . /code/

CMD ["python", "manage.py", "runserver" ,"0.0.0.0:8000"]