Docker

docker.md

Basic Docker Cheatsheet

• docker images Show local images.
• docker ps -a show started and stopped containers. docker ps List all only running docker containers.
• docker stop <containerId> Stop a docker container.
• docker start <containerId> Starts a docker container.
• Pause and unpause with docker pause and docker unpause
• docker run Runs a container. eg. docker run ubuntu
• docker rm Delete a contaner. eg. docker rm <containerId>
• docker image ls List downloaded docker images.

Enter a contaner

docker exec -it <mycontainer> bash to exit run exit

Building a new docker

-t means tag which is mydockerimage in the example below.

docker build -t mydockerimage .

Running

• docker run -p 4000:80 mydockerimage Run a docker image on port 4000
• docker run -it ubuntu bash this is not very useful but it shows you how to start and enter a container.
• docker run -id ubuntu Run a container and don't make it stop.

Copy a file from a container to a host.

docker cp <containerId>:/file/path/within/container/file.txt /host/path/target/file.txt

Other useful commands

• docker stats --all shows a running list of containers.

Full guide

https://github.com/wsargent/docker-cheat-sheet

Dockerfile___node

FROM node:boron

# Create app directory
WORKDIR /usr/src/app

# Install app dependencies
COPY package.json .
# For npm@5 or later, copy package-lock.json as well
# COPY package.json package-lock.json ./

RUN npm install

# Bundle app source
COPY . .

EXPOSE 8080
CMD [ "npm", "start" ]

Dockerfile___static-website

FROM kyma/docker-nginx
COPY src/ /var/www
CMD 'nginx'