Docker & Microservices Cheat Sheet

Docker Image

1. Build an image from a Dockerfile:

   docker build -t image_name path_to_dockerfile

   
   Example:

   docker build -t myapp .

2. List all local images:
   

   docker images

   
   Example:

   docker image ls

3. Pull an image from Docker Hub:
   

   docker pull image_name:tag

   
   Example:

   docker pull nginx:latest

4. Remove a local image:
   

   docker rmi image_name:tag

   
   Example:

   docker rmi myapp:latest

5. Tag an image:
   

   docker tag source_image:tag new_image:tag

   
   Example:

   docker tag myapp:latest myapp:v1

6. Push an image to Docker Hub:
   

   docker push image_name:tag

   
   Example:

   docker push myapp:v1

7. Inspect image details:
   

   docker inspect image_name:tag

   
   Example:

   docker inspect myapp:v1

8. Save image to tar:
   

   docker save -o image_name.tar image_name:tag

   
   Example:

   docker save -o myapp.tar myapp:v1

9. Load image from tar:
   

   docker load -i image_name.tar

   
   Example:

   docker load -i myapp.tar

10. Prune unused images:
    

    docker image prune

Docker Container

1. Run a container from image:
   

   docker run image_name

   
   Example:

   docker run myapp

2. Run named container:
   

   docker run --name container_name image_name:tag

   
   Example:

   docker run --name my_container myapp:v1

3. List running containers:
   

   docker ps

4. List all containers:
   

   docker ps -a

5. Stop container:
   

   docker stop container_name

   
   Example:

   docker stop my_container

6. Start container:
   

   docker start container_name

   
   Example:

   docker start my_container

7. Run in interactive mode:
   

   docker run -it container_name

   
   Example:

   docker run -it my_container

8. Interactive shell mode:
   

   docker run -it container_name sh

   
   Example:

   docker run -it my_container sh

9. Remove stopped container:
   

   docker rm container_name

   
   Example:

   docker rm my_container

10. Force remove running container:
    

    docker rm -f container_name

    
    Example:

    docker rm -f my_container

11. Inspect container:
    

    docker inspect container_name

    
    Example:

    docker inspect my_container

12. View container logs:
    

    docker logs container_name

    
    Example:

    docker logs my_container

13. Pause container:
    

    docker pause container_name

    
    Example:

    docker pause my_container

14. Unpause container:
    

    docker unpause container_name

    
    Example:

    docker unpause my_container

Docker Volumes and Networks

1. Create volume:
   

   docker volume create my_volume

2. List volumes:
   

   docker volume ls

3. Inspect volume:
   

   docker volume inspect my_volume

4. Remove volume:
   

   docker volume rm my_volume

5. Run container with volume:
   

   docker run --name my_container -v my_volume:/app/data myapp:v1

6. Copy to container:
   

   docker cp data.txt my_container:/app/data

7. List networks:
   

   docker network ls

8. Port mapping:
   

   docker run --name my_container -p 8080:80 myapp

9. Create bridge network:
   

   docker network create my_network

10. Connect to network:
    

    docker network connect my_network my_container

11. Inspect network:
    

    docker network inspect my_network

12. Disconnect from network:
    

    docker network disconnect my_network my_container

Docker Compose

1. Start containers:
   

   docker-compose up

2. Stop and remove containers:
   

   docker-compose down

3. Build services:
   

   docker-compose build

4. List containers:
   

   docker-compose ps

5. View logs:
   

   docker-compose logs

6. Scale services:
   

   docker-compose up -d --scale web=3

7. Run command in service:
   

   docker-compose run web npm install

8. List volumes:
   

   docker volume ls

9. Pause service:
   

   docker-compose pause web

10. Unpause service:
    

    docker-compose unpause web

11. Service info:
    

    docker-compose ps web