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 I
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’></a>

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