project: Dockerfile

Tags kubernetes
Hard Prerequisites
IMPORTANT: Please review these prerequisites, they include important information that will help you with this content.
  • K8S: Manual App Deployment – Project Overview
    • Soft Prerequisites
  • K8S: Certbot

    • A Dockerfile is a recipe to deploy your code in a light weight virtual machine (container) while using the libraries from the host machine.

    We will have two sets of files: dev and production. The first would be used in a local development environment (your machine) and the second on a production environment.

    The main difference is that the dev uses HTTP and production uses HTTPS.

    Let’s create a couple of new files on the GitHub repository and commit the changes.

    First, create the Dockerfile for Nginx as nginx/Dockerfile.

    FROM nginx:latest

RUN rm /etc/nginx/conf.d/default.conf
COPY https-nginx.conf /etc/nginx/conf.d

COPY index.html /usr/share/nginx/html/index.html

EXPOSE 80

CMD ["nginx", "-g", "daemon off;"]

    Create the nginx/DockerfileDev file.

    FROM nginx:latest

RUN rm /etc/nginx/conf.d/default.conf
COPY http-nginx.conf /etc/nginx/conf.d

COPY index.html /usr/share/nginx/html/index.html

EXPOSE 80

CMD ["nginx", "-g", "daemon off;"]

    Create the python/Dockerfile to build our Python app.

    FROM python:latest

WORKDIR /app
COPY requirements.txt /app

RUN pip install -r requirements.txt

COPY app.py /app

EXPOSE 5000

CMD ["python", "app.py"]

    And create a file stating the Python app dependencies, under python/requirements.txt .

    flask
psycopg2

    Save the files, commit and push the changes to the GitHub repository.

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