Overview

Managing Images
docker build create an image from a Dockerfile
Managing Containers
docker run <image> create + start
docker create <image> create the container, without starting
docker start <container> create + start the container
docker stop <container> SIGTERM
docker kill <container> SIGKILL
docker restart <container> stop + start
docker pause / unpause <container> suspend / resume the containter
docker rm [-f] <container> destroy te container
Inspecting containers
docker ps [-a] list the containers
docker log <container> show the container output
docker top <container> top the container processes
docker diff <container> show all modified files in container
docker inspect <container> show low-level infos
Interacting with containers
docker cp <src> <dst> copy the file from/into container
docker attach <container> attach io to a running container
docker export <container> export the content of the container to tar archive
docker exec <container> <args> run a command in the container
docker wait <container> wait until the container terminates and return the exit code
docker commit <container> <image> take a snapshot of the container
Imagae management
docker images list of all local images
Dockerfile
FROM <IMAGE>/SCRATCH base image
MAINTAINER <EMAIL> mainainter info
USER <NAME> default username
WORKDIR <PATH> default working directory
CMD <ARGS> set the default command
ENV <NAME> <VALUE> set an environemtn variable
COPY <PATH> <DST> copy <PATH> from the context into the container <DST>
ADD <SRC> <DST> <SRC> could be URLs
RUN <ARGS> run the command in the container

Create an image <a name="build' href='#overview'>

Create an image with tag name

docker build . -t "app/container_name"

Run a new Container

docker run by default has stdout stream connected. -i make the container wait for interaction from host, and -t allocates pseudo-tty driver for the host.

Start a new container from an Image

docker run --name my_container image

Mapping a port

docker run -P <HOSTPORT>:<CONTAINERPORT> image

Detach the io (run in background)

docker run -d image

Assign a hostname

docker run --hostname _hostname image

Create a container

Creat a container from an image, with a name

docker create --name my_container image:tag

List of containers

List of all (running + stopped) containers

docker ps -a

Filter the containter

docker ps -f"name=something"

Delete a container

docker rm <CONTAINER> # -f force quit

Delete all stopped container

docker container prune

Start a container

docker start <CONTAINER>

Stop a container

docker stop <CONTAINER>

Manage Images

Start a new container from an Image