docker_instruction

The small instruction created by my own notes about docker. Commands, Templates

Commands to work with docker images, containers

• Create container, create directories/files inside a container:

docker run --name ubuntu_bash --rm -i -t ubuntu bash

This will create a container named ubuntu_bash and start a Bash session.

docker exec -t <container_id> bash

Execute an interactive bash shell on the container:

• Check container's id, stop container, start container, remove a container:

docker ps -aqf "name=containername"

Shows container's id

docker start <container_id>"

Starts stopped container

docker ps -a 

Lists containers (and tells you which images they are spun from)

docker stop <container_id> 

Stops a container

docker rm <container_id>  

Removes a stopped container

docker rm -f <container_id> 

Forces the removal of a running container (uses SIGKILL)

docker rm -f <container_id>

Delete all containers that are not running.

• List images, Remove images

docker images    

Lists images

docker rmi <image_id>       

Removes an image. Will fail if there is a running instance of that image i.e. container

docker image rm <image_name>   

Removes an image

docker image rm -d <image_name>   

Forcibly delete an image

• Deleting running containers, deleting stopped containers

docker container rm $(docker ps -a -q)

Kill all running containers.

docker container kill $(docker ps -q)

Kill all stopped containers, all networks not used by at least one container, all dangling images. all build cache

• FORSE DELETE IMAGES

docker system prune

Forces removal of image even if it is referenced in multiple repositories, i.e. same image id given multiple names/tags. Will still fail if there is a docker container referencing image

How do ports work?

Mapping different ports to the container's port

docker run -p 8080:80 -p 5000:80 -d <image_name>

It will create a container and maps differenct localhost ports to the main container's port

Formating

Format in Table mod

docker ps --format "table ID\t{{.ID}}\nNAME\t{{.Names}}\nIMAGE\t{{.Image}}\nPORTS\t{{.Ports}}\nCOMMAND\t{{.Command}}\nCREATED\t{{.CreatedAt}}\nSTATUS\t{{.Status}}\n"

Docker Architecture

Problems with "File Sharing"

Cannot create container for service db: status code not OK but 500: {"Message":"Unhandled exception: Filesharing has been cancelled","StackTrace":" at Docker.ApiServices.Mounting.FileSharing.d__6.MoveNext()

(For Docker Desktop (windows)) The solution is to share the project path folder drive in Docker for starter. If that doesn't work, restart docker.

Deployment different apps through Docker to cloud services like: AWS, Google Cloud, Azure

Found an amazing video from "FreeCodeCamp" about this topic: https://www.youtube.com/watch?v=-ANCcFQBk6I&ab_channel=freeCodeCamp.org