Full Dockercheatsheets
Container Management Commands
Inspecting The Container
Image Management Commands
Image Transfer Comnands
Builder Main Commands
docker build [options] .
-t "app/container_name" # nameCreate an image from a Dockerfile.
docker run [options] IMAGE
# see `docker create` for optionsRun a command in an image.
docker create [options] IMAGE
-a, --attach # attach stdout/err
-i, --interactive # attach stdin (interactive)
-t, --tty # pseudo-tty
--name NAME # name your image
-p, --publish 5000:5000 # port map
--expose 5432 # expose a port to linked containers
-P, --publish-all # publish all ports
--link container:alias # linking
-v, --volume `pwd`:/app # mount (absolute paths needed)
-e, --env NAME=hello # env vars$ docker create --name app_redis_1 \
--expose 6379 \
redis:3.0.2
Create a container from an image.
docker exec [options] CONTAINER COMMAND
-d, --detach # run in background
-i, --interactive # stdin
-t, --tty # interactive$ docker exec app_web_1 tail logs/development.log
$ docker exec -t -i app_web_1 rails c
Run commands in a container.
docker start [options] CONTAINER
-a, --attach # attach stdout/err
-i, --interactive # attach stdin
docker stop [options] CONTAINERStart/stop a container.
$ docker ps
$ docker ps -a
$ docker kill $ID
Manage containers using ps/kill.
$ docker images
REPOSITORY TAG ID
ubuntu 12.10 b750fe78269d
me/myapp latest 7b2431a8d968$ docker images -a # also show intermediateManages images.
docker rmi b750fe78269dDeletes images.
- Getting Started (docker.io)
FROM ruby:2.2.2
ENV APP_HOME /myapp
RUN mkdir $APP_HOME
RUN bundle install
WORKDIR /myapp
VOLUME ["/data"]
# Specification for mount point
ADD file.xyz /file.xyz
COPY --chown=user:group host_file.xyz /path/container_file.xyz
ONBUILD RUN bundle install
# when used with another file
EXPOSE 5900
CMD ["bundle", "exec", "rails", "server"]
ENTRYPOINT ["executable", "param1", "param2"]
ENTRYPOINT command param1 param2
Configures a container that will run as an executable.
ENTRYPOINT exec top -b
This will use shell processing to substitute shell variables, and will ignore any CMD or docker run command line arguments.
LABEL version="1.0"
LABEL "com.example.vendor"="ACME Incorporated"
LABEL com.example.label-with-value="foo"
LABEL description="This text illustrates \
that label-values can span multiple lines."
# docker-compose.yml
version: '2'
services:
web:
build: .
# build from Dockerfile
context: ./Path
dockerfile: Dockerfile
ports:
- "5000:5000"
volumes:
- .:/code
redis:
image: redisdocker-compose start
docker-compose stopdocker-compose pause
docker-compose unpausedocker-compose ps
docker-compose up
docker-compose down{: .-three-column}
web:
# build from Dockerfile
build: . # build from custom Dockerfile
build:
context: ./dir
dockerfile: Dockerfile.dev # build from image
image: ubuntu
image: ubuntu:14.04
image: tutum/influxdb
image: example-registry:4000/postgresql
image: a4bc65fd ports:
- "3000"
- "8000:80" # guest:host # expose ports to linked services (not to host)
expose: ["3000"] # command to execute
command: bundle exec thin -p 3000
command: [bundle, exec, thin, -p, 3000] # override the entrypoint
entrypoint: /app/start.sh
entrypoint: [php, -d, vendor/bin/phpunit] # environment vars
environment:
RACK_ENV: development
environment:
- RACK_ENV=development # environment vars from file
env_file: .env
env_file: [.env, .development.env] # makes the `db` service available as the hostname `database`
# (implies depends_on)
links:
- db:database
- redis # make sure `db` is alive before starting
depends_on:
- db # make this service extend another
extends:
file: common.yml # optional
service: webapp volumes:
- /var/lib/mysql
- ./_data:/var/lib/mysqlservices:
web:
labels:
com.example.description: "Accounting web app"services:
web:
dns: 8.8.8.8
dns:
- 8.8.8.8
- 8.8.4.4services:
web:
devices:
- "/dev/ttyUSB0:/dev/ttyUSB0"services:
web:
external_links:
- redis_1
- project_db_1:mysqlservices:
web:
extra_hosts:
- "somehost:192.168.1.100"Sangam biradar - [email protected] - https://engineitops.github.io
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