Editando Docker

= Docker =

== Instalando o Docker ==

Atualize os repositórios.

 sudo apt update 

Em seguida, instale alguns pacotes de pré-requisitos que permitem usar pacotes via HTTPS.

 sudo apt install apt-transport-https ca-certificates curl software-properties-common 

Em seguida, adicione a chave GPG do repositório oficial do Docker ao seu sistema.

 curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg 

Adicione o repositório Docker às fontes APT.

<pre>
 echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null 
</pre>

Atualize sua lista existente de pacotes novamente para que a adição seja reconhecida:

 sudo apt update 

Certifique-se de instalar a partir do repositório Docker em vez do repositório padrão do Ubuntu:

 apt-cache policy docker-ce 

E por fim, instale o Docker.

 sudo apt install docker-ce 

O Docker agora deve estar instalado, o daemon iniciado e o processo habilitado para iniciar na inicialização. Verifique se está funcionando:

 sudo systemctl status docker 

Se você quiser evitar digitar sudo sempre que executar o docker comando, adicione seu nome de usuário ao dockergrupo:

 sudo usermod -aG docker ${USER} 

== Usando o docker ==


Em geral o comando para uso do Docker tem a seguinte sintaxe:

 docker [OPTIONS] COMMAND 

Para procurar uma imagem a ser instalada:

 docker serach *termo de pesquisa* 

Para baixar alguma imagem:

 docker pull *nome da imagem* 

Para listar as imagens já baixadas:

 docker images 

Para iniciar uma imagem e ter acesso ao seu terminal:

 docker run -it *nome da imagem* 

Para listar os docker's ativos no momento:

 docker ps 

Para listar todos os docker's do seu computador:

 docker ps -a 

Para iniciar um container parado:

 docker start *id ou nome do container* 

Para parar um container:

 docker stop *id ou nome do container* 

Para remover um container:

 docker rm *id ou nome do container* 

A self-sufficient runtime for containers

'''Common Commands'''

* '''run''': Create and run a new container from an image
* '''exec''': Execute a command in a running container
* '''ps''': List containers
* '''build''': Build an image from a Dockerfile
* '''pull''': Download an image from a registry
* '''push''': Upload an image to a registry
* '''images''': List images
* '''login''': Log in to a registry
* '''logout''': Log out from a registry
* '''search''': Search Docker Hub for images
* '''version''': Show the Docker version information
* '''info''': Display system-wide information

'''Management Commands'''

* '''builder''': Manage builds
* '''buildx''': Docker Buildx (Docker Inc., v0.10.2)
* '''compose''': Docker Compose (Docker Inc., v2.16.0)
* '''container''': Manage containers
* '''context''': Manage contexts
* '''image''': Manage images
* '''manifest''': Manage Docker image manifests and manifest lists
* '''network''': Manage networks
* '''plugin''': Manage plugins
* '''scan''': Docker Scan (Docker Inc., v0.23.0)
* '''system''': Manage Docker
* '''trust''': Manage trust on Docker images
* '''volume''': Manage volumes

'''Swarm Commands'''

* '''swarm''': Manage Swarm

Commands

* '''attach''': Attach local standard input, output, and error streams to a running container
* '''commit''': Create a new image from a container's changes
* '''cp''': Copy files/folders between a container and the local filesystem
* '''create''': Create a new container
* '''diff''': Inspect changes to files or directories on a container's filesystem
* '''events''': Get real time events from the server
* '''export''': Export a container's filesystem as a tar archive
* '''history''': Show the history of an image
* '''import''': Import the contents from a tarball to create a filesystem image
* '''inspect''': Return low-level information on Docker objects
* '''kill''': Kill one or more running containers
* '''load''': Load an image from a tar archive or STDIN
* '''logs''': Fetch the logs of a container
* '''pause''': Pause all processes within one or more containers
* '''port''': List port mappings or a specific mapping for the container
* '''rename''': Rename a container
* '''restart''': Restart one or more containers
* '''rm''': Remove one or more containers
* '''rmi''': Remove one or more images
* '''save''': Save one or more images to a tar archive (streamed to STDOUT by default)
* '''start''': Start one or more stopped containers
* '''stats''': Display a live stream of container(s) resource usage statistics
* '''stop''': Stop one or more running containers
* '''tag''': Create a tag TARGET_IMAGE that refers to SOURCE_IMAGE
* '''top''': Display the running processes of a container
* '''unpause''': Unpause all processes within one or more containers
* '''update''': Update configuration of one or more containers
* '''wait''': Block until one or more containers stop, then print their exit codes

'''Global Options'''

* '''--config string''': Location of client config files (default "/home/robisonjoel/.docker")
* '''-c,''' ou '''--context string''': Name of the context to use to connect to the daemon (overrides DOCKER_HOST env var and default context set with "docker context use")
* '''-D''' ou '''--debug''': Enable debug mode
* '''-H''' ou '''--host list''': Daemon socket(s) to connect to
* '''-l''', '''--log-level string''': Set the logging level ("debug", "info", "warn", "error", "fatal") (default "info")
* '''--tls''': Use TLS; implied by --tlsverify
* '''--tlscacert string''': Trust certs signed only by this CA (default "/home/robisonjoel/.docker/ca.pem")
* '''--tlscert string''': Path to TLS certificate file (default "/home/robisonjoel/.docker/cert.pem")
* '''--tlskey string''': Path to TLS key file (default "/home/robisonjoel/.docker/key.pem")
* '''--tlsverify''': Use TLS and verify the remote
* '''-v''' ou '''--version''': Print version information and quit

Run  docker COMMAND --help' for more information on a command .

== FONTE ==

* https://docs.docker.com/go/guides/

* https://www.digitalocean.com/community/tutorials/how-to-install-and-use-docker-on-ubuntu-22-04