Docker CS

Frequently used #

Build #

1. Build: docker build -t tag-name # from dir that contains Dockerfile docker build . # from dir that contains Dockerfile “.”:

   • means Dockerfile is located in the current directory
   • copy current directory contents into image

2. build with Naming Images: docker build -t image-name # from dir that contains Dockerfile

Containers #

1. Create a container with name docker run --name container_name image_name

2. Create container in detached mode docker run -d --name container_name image_name

3. Create Container with env variables docker run --name bakery -p 8001:8000 -e DEVELOPMENT_MODE=True bakery-img

4. Publish ports To creates a firewall rule which maps a container port to a port on the Docker host to the outside world docker run --name container_name -p host-port:container-port image_name

5. list containers docker container ls --all | grep s3fs docker container ls -f s3fs ref

6. container logs docker logs -f --until=2s container-name

7. Remove container docker rm container-name

8. SSH to container docker exec -it container-name bash-command

   e.g.

Docker registry #

1. Login docker login # default registry is docker hub docker login registry-1.docker.io

2. Push

   1. create a repository on docker hub and copy the command, docker push jaaved9/assessment:tagname docker push jaaved9/assessment:latest

   2. To push to private or non docker hub repo docker push localhost.localdomain:5000/ubuntu # give full URL

3. tagging remote repo docker tag SOURCE_IMAGE[:TAG] TARGET_IMAGE[:TAG]

Inspect Details #

docker inspect hash
docker top hash

Mounting #

“-mount” or “-v” -v <source>:<target>

docker run -d --name nginx --network host \
      -v $PWD/nginx.conf:/etc/nginx/nginx.conf:ro \
     nginx:1.20