`docker`

32 commands

Build and tag an image
```
docker build -t myapp:latest .
```
Builds an image from the Dockerfile in the directory and gives it the name and tag.
- images
- build
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Find containers by name
```
docker ps -a --filter "name=name"
```
Lists containers, running or not, whose name contains the given text.
- list
- search
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Follow a container's logs
```
docker logs -f container
```
Prints the container's output and keeps streaming new lines until you press Ctrl+C.
- logs
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Follow the logs of a Compose service
```
docker compose logs -f service
```
Streams the output of the service's containers, each line prefixed with the container name.
- compose
- logs
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Inspect a container
```
docker inspect container
```
Prints the full low-level configuration and state of the container as JSON.
- debug
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List a Compose project's containers
```
docker compose ps
```
Shows the containers of the project with their service, state and published ports.
- compose
- list
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List all containers, including stopped ones
```
docker ps -a
```
Shows every container, including the ones that exited or were never started.
- list
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List containers by status
```
docker ps -a --filter "status=exited"
```
Lists containers in the given state, such as exited, running or paused.
- list
- troubleshooting
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List dangling images
```
docker images -f dangling=true
```
Shows untagged images left over from rebuilds, which only take up disk space.
- images
- cleanup
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List local images
```
docker images
```
Shows downloaded images with their repository, tag, ID, age and size.
- images
- list
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List running containers
```
docker ps
```
Shows running containers with their ID, image, status, published ports and name.
- list
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Open a shell in a Compose service
```
docker compose exec service sh
```
Starts an interactive shell in the running container of the service.
- compose
- shell
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Open a shell in a running container
```
docker exec -it container sh
```
Starts an interactive shell inside the running container without restarting it.
- shell
- debug
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Override the image entrypoint
```
docker run --rm -it --entrypoint sh image
```
Starts the container with another program instead of the image's default entrypoint, which helps debug images.
- run
- debug
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Rebuild and start a Compose project
```
docker compose up -d --build
```
Rebuilds the service images from their Dockerfiles, then starts the containers in the background.
- compose
- build
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Remove a Compose project and its volumes
Destructive
```
docker compose down -v
```
Stops and removes the containers, networks and named volumes, deleting the data stored in those volumes.
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Remove unused Docker data
Destructive
```
docker system prune
```
Deletes stopped containers, unused networks, dangling images and build cache after asking for confirmation.
- disk
- cleanup
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Run a command in a container as another user
```
docker exec -it -u root container sh
```
Runs the command inside the container as the given user, for example root to install a debugging tool.
- shell
- debug
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Run a command in a running container
```
docker exec container command
```
Runs a one-off command inside the running container and prints its output.
- debug
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Run a container in the background
```
docker run -d --name name nginx
```
Starts a named container from the image, detached from the terminal, and prints its ID.
- run
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Run a container with a mounted directory
```
docker run -v $PWD:/data image
```
Shares a host directory with the container, so changes made on either side are visible to both.
- run
- volumes
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Run a container with a published port
```
docker run -d -p 8080:80 nginx
```
Starts the container in the background and forwards the host port to the container port.
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Run a container with an environment variable
```
docker run -e APP_ENV=production image
```
Starts a container with the variable set in its environment.
- run
- config
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Run a throwaway interactive container
```
docker run --rm -it alpine sh
```
Opens a shell in a new container that is deleted as soon as you exit.
- run
- shell
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Show Docker disk usage
```
docker system df
```
Shows how much space images, containers, volumes and build cache take, and how much of it is reclaimable.
- disk
- cleanup
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Show live resource usage of containers
```
docker stats
```
Displays a live view of CPU, memory, network and disk I/O for each running container.
- monitoring
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Show recent logs with timestamps
```
docker logs -t --since 10m container
```
Prints the log lines written since the given duration or date, each prefixed with its timestamp.
- logs
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Show the last lines of a container's logs
```
docker logs --tail 100 container
```
Prints only the most recent lines of output instead of the whole log history.
- logs
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Start a Compose project in the background
```
docker compose up -d
```
Creates and starts every service defined in the compose file of the current directory.
- compose
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Stop a Compose project
Caution
```
docker compose stop
```
Stops the containers of the project without removing them, so they can be started again.
- compose
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Stop and remove a Compose project
Caution
```
docker compose down
```
Stops and removes the containers and networks of the project while keeping its volumes.
- compose
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Use another Compose file and project name
```
docker compose -p project -f compose.prod.yaml up -d
```
Starts the services from the given compose file under a custom project name.
- compose
- config
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`docker`

Build and tag an image

Find containers by name

Follow a container's logs

Follow the logs of a Compose service

Inspect a container

List a Compose project's containers

List all containers, including stopped ones

List containers by status

List dangling images

List local images

List running containers

Open a shell in a Compose service

Open a shell in a running container

Override the image entrypoint

Rebuild and start a Compose project

Remove a Compose project and its volumes

Remove unused Docker data

Run a command in a container as another user

Run a command in a running container

Run a container in the background

Run a container with a mounted directory

Run a container with a published port

Run a container with an environment variable

Run a throwaway interactive container

Show Docker disk usage

Show live resource usage of containers

Show recent logs with timestamps

Show the last lines of a container's logs

Start a Compose project in the background

Stop a Compose project

Stop and remove a Compose project

Use another Compose file and project name

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