Docker.md

List all Docker Images docker images -a

List All Running Docker Containers docker ps

List All Docker Containers docker ps -a

Start a Docker Container docker start

Stop a Docker Container docker stop

Kill All Running Containers docker kill $(docker ps -q)

View the logs of a Running Docker Container docker logs DOCKER

Delete All Stopped Docker Containers Use -f option to nuke the running containers too. docker rm $(docker ps -a -q)

Remove a Docker Image docker rmi

Delete All Docker Images docker rmi $(docker images -q)

Delete All Untagged (dangling) Docker Images docker rmi $(docker images -q -f dangling=true)

Delete All Images docker rmi $(docker images -q)

Remove Dangling Volumes docker volume rm -f $(docker volume ls -f dangling=true -q)

SSH Into a Running Docker Container Okay not technically SSH, but this will give you a bash shell in the container.

sudo docker exec -it bash

Use Docker Compose to Build Containers Run from directory of your docker-compose.yml file.

docker-compose build

Use Docker Compose to Start a Group of Containers Use this command from directory of your docker-compose.yml file.

docker-compose up -d

This will tell Docker to fetch the latest version of the container from the repo, and not use the local cache.

docker-compose up -d --force-recreate

This can be problematic if you’re doing CI builds with Jenkins and pushing Docker images to another host, or using for CI testing. I was deploying a Spring Boot Web Application from Jekins, and found the docker container was not getting refreshed with the latest Spring Boot artifact.

#stop docker containers, and rebuild docker-compose stop -t 1 docker-compose rm -f docker-compose pull docker-compose build docker-compose up -d

Follow the Logs of Running Docker Containers With Docker Compose docker-compose logs -f

Save a Running Docker Container as an Image

docker commit

Follow the logs of one container running under Docker Compose

docker-compose logs pump

Add Oracle Java to an Image For CentOS/ RHEL

ENV JAVA_VERSION 8u31 ENV BUILD_VERSION b13

Upgrading system

RUN yum -y upgrade RUN yum -y install wget

Downloading & Config Java 8

RUN wget --no-cookies --no-check-certificate --header "Cookie: oraclelicense=accept-securebackup-cookie" "http://download.oracle.com/otn-pub/java/jdk

/$JAVA_VERSION-$BUILD_VERSION/jdk-$JAVA_VERSION-linux- x64.rpm" -O /tmp/jdk-8-linux-x64.rpm

RUN yum -y install /tmp/jdk-8-linux-x64.rpm RUN alternatives --install /usr/bin/java jar /usr/java/latest/bin/java 200000 RUN alternatives --install /usr/bin/javaws javaws /usr/java/latest /bin/javaws 200000 RUN alternatives --install /usr/bin/javac javac /usr/java/latest/bin/javac 200000

Add / Run a Spring Boot Executable Jar to a Docker Image ADD /maven/myapp-0.0.1-SNAPSHOT.jar myapp.jar RUN sh -c 'touch /myapp.jar' ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-jar"," /myapp.jar"]

Show Running Containers docker ps

Show All Containers - Running and stopped docker ps -a

Default Tag 'latest' is selected if no other value is specified

Run A Docker Image docker run

See the Console Output of a Docker Container docker logs

Build a docker image From the directory of the Dockerfile run: docker build -t

Stop a docker container docker kill or docker stop

Parameter that tells docker to run the container as a background process -d Example: docker run -d

List all docker images on your system docker images

Map a Host Port to a Container Port -p : Example: docker run -p 8080:8080

Tail the Console Output of a Running Docker Container docker logs -f

A .java file to a docker image - i.e. the source code The Dockerfile

Remove a Stopped Docker Container docker rm

Specify an Environment Variable for a Docker Container docker run -e MY_VAR=my_prop

Remove a Docker Image from your System docker rmi

Shell into a Running Docker Container docker exec -it bash

Share Storage on a Host System with a Docker container -v : Example: docker run -v :

Name of the Maven plugin we are using for the Course Fabric8

Map a Host Port to a Container Port -p : Example: docker run -p 8080:8080

Maven Command to Stop Running Image(s) mvn docker:stop

Maven Command to Build a Docker Image mvn clean package docker:build

Remove a Stopped Docker Container docker rm

Maven Command Used to Publish a Docker Image to its Repository mvn docker:push

Maven Command Used To Start a Docker Image mvn docker:start

Run Containers in the Background from Maven mvn docker:start

XML Tag that has the Runtime Parameters for the Fabric8 Plugin params here

Map a Host Port to a Container Port in Maven Configuration 8080:8080

Parameter that Creates a Network Host Name Reference for a Docker Container to Another Container "--link" {dash dash} --link :

Specify Environment Variable for a Docker Container in Maven Configuration <parameter_name>{value}</parameter_name>

Maven Command Used To Start a Docker Image Interactively mvn docker:run

Where to Store Credentials for Docker Hub ~/.m2/settings.xml

Example: docker.io springframeworkguru YourPasswordHere

DOCKER SWARM Is Docker Swarm automatically enabled? No, by default, Docker Swarm is not available

Types of Nodes in a Docker Swarm Manager and worker

Enable the First Node of a Docker Swarm docker swarm init

List Running Services docker service ls

Add a Node to a Swarm Cluster docker swarm join --token --listen-addr ip:port

Can manager nodes run containers? Yes, manager nodes normally run containers

Retrieve the Join Token docker swarm join-token

List Nodes in a Cluster docker node ls

Can you run a 'docker node ls' from a worker node? No. Docker Swarm commands can only be from manager nodes

List Services in a Docker Swarm docker service ls

List Containers in a Service docker service ps

Remove a Service docker service rm

Remove a Node from a Swarm Cluster docker node rm

Promote a Node from Worker to Manager docker node promote

Change a Node from a Manager to a Worker docker node demote

Map a Host Port to a Container Port -p : Example: docker run -p 8080:8080