Run docker container -d (detached mode - demon mode) --rm(remove container after stop or kill - usefull for development) --name (name of container, by default will be hacker or scientist name-surname)

docker run -d --rm --name ContainerName ubuntu:20.04 -s /bin/bash username

Tail last logs

docker logs (image name or name or container ID(* you can type first symbol of container id) )

LIVE logs add key -f (follow)

docker logs -f (image name or name or container ID(* you can type first symbol of container id) )

Create docker user (-m create homecategory)

useradd -m -s /bin/bash username

Add user to docker group (in example docker) <- user (username)

usermod -aG docker username

Check which groups are exist created user -> Print out applyed groups

id username

Check if user can run docker

su - username

docker --version

Check if docker is running on Ubuntu

service docker status

Show all container

docker ps -a

Remove docker container by name (Copy full name, autogenerated if not setted container name), by image namem or container ID (You can type few start symbols, as example from 7ab0a37f41a5 you can type docker rm 7ab)

docker rm (image name or name or container ID(* you can type first symbol of container id) )

1. Go inside container (container name) in -it(interactive mode) and run bash

docker exec -it (image name or name or container ID(* you can type first symbol of container id) ) /bin/bash

2. Inside container enviroment variables

env

docker inspect (image name or name or container ID(* you can type first symbol of container id) )

docker stats (image name or name or container ID(* you can type first symbol of container id) )

Main idea

1. Stop container docker stop (image name or name or container ID(* you can type first symbol of container id) )
2. Remove container docker rm (image name or name or container ID(* you can type first symbol of container id) )
3. Remove Image docker rmi (image name or name or container ID(* you can type first symbol of container id) )

To remove all stopped containers and images -a(remove images) --volumes(remove persistent data - volumes)

docker system prune -a --volumes (image name or name or container ID(* you can type first symbol of container id) )

Check open connection on server

netstat -tulpen

Check ethernet interfaces and IP

ip a

1. macvlan - IP and MAC will be different
2. ipvlan - IP will be different but MAC the same
3. none - no network (not possible to connect form world or inside)
4. host - IP the same as server
5. bridge - connect from "qorld" if use port forwarding 80 -p 80:80

docker network create -d bridge --subnet 192.168.10.0/24 --gateway 192.168.10.1 myNetworkName

Create MACVLAN network with IP 192.168.100.99

docker network create -d macvlan (-d driver) --subnet 192.168.100.0/24 --gateway 192.168.100.1 --ip-range 192.168.100.99/32 -o parent=ens18 (ens18 - network inteface) MACNetworkName

Check available networks

docker network ls

Inspect - networks details

docker network inspect (network name myNetworkName)

Connect container to network

docker network connect (network name myNetworkName) (container name or id)

Disconnect container to network

docker network disconnect (networkID - can get NetworkID `docker inspect (container name)`) (container name or id)

1. Create dockerfile touch dockerfile
2. Edit with vim vi dockerfile and add some instructions FROM ubuntu:22.04 CMD ["echo", "Echo message"]
3. Build image docker build .
4. Check unnamed docker-image docker images
5. Update - revise tag and version docker tag (image name or ID) imagename:v1

To build with tag add -t to build with image repository name and image tag

docker build -t imagename:v1