Docker workshop 🦈

Dockerize project:

to dockerize your project you need to create dockerfile that contains instructions for container

• dockerfile 📃:

  FROM ImageName
  
  WORKDIR src/app/
  
  # copy your project to workdir relative path :
  COPY . .
  
  #command that run when you build your image
  RUN executable parameter
  
  # change user from root to yourUser
  USER yourUser
  
  # Define the network ports that this container will listen on at runtime.
  
  EXPOSE portProject
  
  # command that running when container started
  CMD ['executable','parameter']
  
  

note: Application automatically start in production mode

when you create dockerfile all you need now is building your image

docker build -t Tag-of-image path-of-dockerfile

now start your image 🐲

docker run -p your-network-port:port-of-container image-name-or-container-id

Why we need docker-compose 🎼:

Compose is a tool for defining and running multi-container Docker applications. With Compose, you use a YAML file to configure your application’s services. Then, with a single command, you create and start all the services from your configuration.

Docker Commands Cheat Sheet:

command	Description
docker ps	List running containers
docker ps -a	List all containers
docker exec -it container-name /bin/sh	connect to container
docker start container-name	start a container
docker stop container-name	stop a container
docker kill container-name	kill a container
docker restart container-name	Restart a container
docker rm container-name	remove a container
docker stats	Show running container stats
docker system df	disk space being used by your containers
docker run -d -p 80:80 image-name	disk space being used by your containers

Share your application ☁️:

• login to your account docker hub docker login
• create new repo
• link your image with the repo
• push your image
• it's live now !

References 📖:

• how to use mongodb with docker compose instead of MongoDB Compass
• Docker cheat sheet
• what's containers
• github actions CI/CD