Introduction

How cool that you’ve discovered our Docker projects! Here you’ll find everything you need to smoothly run your Docker projects with Docker and Docker Compose.

Our main goal is to make setting up your Docker projects effortless. By containerizing the application components with Docker, we aim for consistency across different environments and simplify dependency management.

So, let us help you enhance your development experience and quickly set up your projects with Docker and Docker Compose!


What is Docker?

Docker is a platform used to develop, deploy, and run applications in containers. A container is a stand-alone, executable software package that contains everything needed to run a piece of software, including code, runtime, libraries, system tools, and settings.

With Docker, developers can build, share, and run containers across different environments, regardless of the infrastructure. This ensures consistent operation of software no matter where it’s run.


What is Docker Compose?

Docker Compose is a tool for defining and running multi-container Docker applications. With Compose, you can easily create a YAML file to configure your app’s services, networks, and volumes, allowing you to start your entire app with just a few commands.


Basic Usage

To start a simple container, use the following Docker commands:

# Pull the latest image from Docker Hub
docker pull image_name

# Start a container
docker run image_name

For using Docker Compose, create a docker-compose.yml file with your app’s configuration and then run the following command:

docker-compose up

This will start all services as specified in the YAML file.


Dockerfile

A Dockerfile is a text file with instructions that tell Docker how to build a Docker image. It allows you to specify your application’s configuration and dependencies.

Here’s an example of a simple Dockerfile:

# Use a base image
FROM ubuntu:20.04

# Install necessary packages
RUN apt-get update && apt-get install -y \
    package1 \
    package2

# Copy local source code to the container
COPY . /app

# Set the working directory in the container
WORKDIR /app

# Run command when starting the container
CMD ["python", "app.py"]

Docker Compose File

A Docker Compose file is a YAML file that defines the services, networks, and volumes for your application. It allows you to orchestrate multiple containers to work together as one application.

Here’s an example of a simple Docker Compose file:

version: "3"

services:
  web:
    image: nginx:latest
    ports:
      - "8080:80"
  db:
    image: mysql:latest
    environment:
      MYSQL_ROOT_PASSWORD: example

FAQs

What’s the difference between Docker and Docker Compose?
Docker is a platform for running containers, while Docker Compose is a tool for defining and running multi-container Docker applications.

Can I use Docker on Windows and macOS?
Yes, Docker Desktop provides support for both Windows, macOS and Linux.

How can I create my own Docker image?
You can create your own Docker image by writing a Dockerfile that defines your application’s configuration and dependencies.


Resources

That’s a quick introduction to Docker and Docker Compose. Have fun containerizing! 🐳


Contribute to Homelab-Alpha - Docker

We value your contribution. We want to make it as easy as possible to submit your contributions to the Homelab-Alpha - docker repository. Changes to the docker are handled through pull requests against the main branch. To learn how to contribute, see contribute.


© 2024 Homelab-Alpha and its repositories are licensed under the terms of the license agreement.

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Last updated 22 Sep 2024, 12:15 CEST . history