malleswar-reddy/dockernotes

DockerNotes

Frequently Used Docker Commands

Purpose	Command/Description
List all containers	docker ps -a
List all images	docker images
View logs of a container	docker logs <container_name>
Stop a running container	docker stop <container_name>
Remove a container	docker rm <container_name>
Remove an image	docker rmi <image_name>
Copy files from container	docker cp <container_name>:<path_within_container> <dest_path_in_host>
Copy files to container	docker cp <src_path_in_host> <dest_container_name>:<path_within_container>
Cleaning up old images/networks	Stop all containers. Then \n docker system prune -f
Log in to a running container	docker exec -ti <container_name> sh
Check the contents of an image	You have to create a container from the image to do so. Use the run command to start a container.\n docker run -ti --rm <image_name> sh

Permission Issues

Since there are volume mappings for server log directories to the host machine, the very first attempt to start the server might fail with the server unable to write logs. This can be easily fixed by changing the owner and(or) allowing appropriate permissions. By default, the log directories are mapped under the host directory /opt/docker/was-9.0.0-mq-9.0-npp-6.2

sudo chown -R iid:iid /opt/docker/was-9.0.0-mq-9.0-npp-6.2 && chmod -R 777 /opt/docker/was-9.0.0-mq-9.0-npp-6.2