Docker Examples

Published 10 months ago.
Last updated January 14th, 2025

Crons in Alpine

Nginx

Hosting a Static Website with Nginx

Hosting a static website with Docker and Nginx is straightforward. You can use an official Nginx Docker image and mount your website files into the container.

docker run \
    -d \
    -p 8080:80 \
    -v /path/to/your/website:/usr/share/nginx/html:ro \
nginx:latest

This command starts a new container from the nginx:latest image, maps port 8080 on the host to port 80 in the container, and mounts your static website files into the correct location in the container.

WordPress

Hosting a Worpress Site

Docker makes it easy to host a WordPress site, as Docker images are available for both WordPress and MySQL (which WordPress requires). With Docker Compose, you can define both services in a single file.

This compose.yml file defines a db service (running MySQL) and a wordpress service. It uses a volume to persist the MySQL data.

volumes:
  wp_db_data:

services:
  db:
    image: mysql:5.7
    volumes:
      - wp_db_data:/var/lib/mysql
    environment:
      MYSQL_ROOT_PASSWORD: somewordpress
      MYSQL_DATABASE: wordpress
      MYSQL_USER: wordpress
      MYSQL_PASSWORD: wordpress

  wordpress:
    depends_on:
      - db
    image: wordpress:latest
    ports:
      - "8080:80"
    environment:
      WORDPRESS_DB_HOST: db:3306
      WORDPRESS_DB_USER: wordpress
      WORDPRESS_DB_PASSWORD: wordpress
      WORDPRESS_DB_NAME: wordpress

Request Tracker

name: rt5-app

volumes:
  rt5-db-data:

services:
  rt5-db:
    image: mariadb:11.4.2
    restart: always
    environment:
      MYSQL_ROOT_PASSWORD: rootpass
      MYSQL_DATABASE: rt
      MYSQL_USER: rt_user
      MYSQL_PASSWORD: password
    volumes:
      - rt5-db-data:/var/lib/mysql
    ports:
      - "3306:3306"
  rt5-app:
    build:
      context: .
      target: alpine-and-nginx-base
    depends_on:
      - rt5-db
    ports:
      - "8080:80"
    environment:
      DB_HOST: rt5-db
      DB_PORT: 3306
      DB_USER: rt_user
      DB_PASSWORD: password
      DB_NAME: rt
      DBA_USERNAME: root
    links:
      - rt5-db

Node

Hosting a NodeJS App

Hosting a Node.js app with Docker involves creating a custom Docker image that includes your app. Here's a simple Dockerfile for a Node.js app:

# Dockerfile
FROM node:14
WORKDIR /app
COPY package*.json ./
RUN npm install
COPY . .
EXPOSE 8080
CMD [ "node", "server.js" ]

This Dockerfile creates a new image based on the node:14 image, copies your app into the image, installs your app's dependencies, and specifies how to start your app.

Docker's flexibility allows it to be used in many other scenarios beyond the ones we've covered here. By understanding the principles and techniques we've discussed, you can adapt Docker to your specific web hosting needs. In the final section, we'll provide some additional resources to help you further your understanding and usage of Docker in web hosting.