# Docker
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Image = application + dependencies
Containers - An instance based on an image that runs on a "Docker Host"
### Lifecycle Commands
* Create a container (without starting it):
```
docker create [IMAGE]
```
* Rename an existing container
```
docker rename [CONTAINER_NAME] [NEW_CONTAINER_NAME]
```
* Run a command in a new container
```
docker run [IMAGE] [COMMAND]
```
`-d` - detached application will run in background and will not show any console output
`-p` - publish port \:\
\--name - optional
-v - mount a volume
\--link - communicate between containers
* Remove container after it exits
```
docker run --rm [IMAGE]
```
* Start a container and keep it running
```
docker run -td [IMAGE]
```
* Start a container and creates an interactive bash shell in the container
```
docker run -it [IMAGE]
```
* Create, Start, and run a command inside the container and remove the container after executing command.
```
docker run -it-rm [IMAGE]
```
* Execute command inside already running container.
```
docker exec -it [container]
```
* Delete a container (if it is not running)
```
docker rm [CONTAINER]
```
* Update the configuration of the container
```
docker update [CONTAINER]
```
### Starting and Stopping Containers
* Start Container
```
docker start [CONTAINER]
```
* Stop running Container
```
docker stop [CONTAINER]
```
* Stop running Container and start it again
```
docker restart [CONTAINER]
```
* Pause processes in a running container
```
docker pause [CONTAINER]
```
* Unpause processes in a running container
```
docker unpause [CONTAINER]
```
* Block a container until others stop
```
docker wait [CONTAINER]
```
* Kill a container by sending a SIGKILL to a running container
```
docker kill [CONTAINER]
```
* Attach local standard input, output, and error streams to a running container
```
docker attach [CONTAINER]
```
### Docker Image Commands
* Create an image from a tarball
```
docker import [URL/FILE]
```
* Create an image from a container
```
docker commit [CONTAINER] [NEW_IMAGE_NAME]
```
* Load an image from a tar archive or stdin
```
docker load [TAR_FILE/STDIN_FILE]
```
* Save an image to a tar archive
```
docker save [IMAGE] > [TAR_FILE]
```
### Docker Container And Image Information
* List real-time events from a container
```
docker events [CONTAINER]
```
* Show port mapping for a container
```
docker port [CONTAINER]
```
* Show running processes in a container
```
docker top [CONTAINER]
```
* Show live resource usage statistics of container
```
docker stats [CONTAINER]
```
* Show changes to files (or directories) on a filesystem
```
docker diff [CONTAINER]
```
* List all images that are locally stored with the docker engine
```
docker [image] ls
```
* Show the history of an image
```
docker history [IMAGE]
```
### Network Commands
* List networks
```
docker network ls
```
* Remove one or more networks
```
docker network rm [NETWORK]
```
* Show information on one or more networks
```
docker network inspect [NETWORK]
```
* Connects a container to a network
```
docker network connect [NETWORK] [CONTAINER]
```
* Disconnect a container from a network
```
docker network disconnect [NETWORK] [CONTAINER]
```
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