001-docker-image

Create Docker Images

Table of Contents

• Running Docker container from local repository
• Push Docker Images to Registry

mvn package -Pdocker for each repo will create the Docker image.

By default, the Docker image name is arungupta/<service> where <service> is greeting, name or webapp. Run this command in each directory which contains clones from github (microservices-greeting, microservices-name, microservices-webapp)

$ mvn package -Pdocker

The image can be created in your repo:

mvn package -Pdocker -Ddocker.repo=<repo>

By default, the latest tag is used for the image. A different tag may be specified as:

mvn package -Pdocker -Ddocker.tag=<tag>

Running Docker container from local repository

$ docker run -d -p 8081:8081 arungupta/greeting (close the previous session open with 8081)
$ curl http://localhost:8081/resources/greeting

Push Docker Images to Registry

(Important) Attach AmazonEC2ContainerRegistryFullAccess Policy to k8s-workshop-LabIdeRole-xxx Role through AWS IAM console or using aws-cli.

Log in to ECR

$ aws ecr get-login --no-include-email --region us-west-2 or us-east-1 (copy and paste the output of this commend)

Create ECR repository to deploy docker into ECS.

$ aws ecr create-repository --repository-name greeting
$ aws ecr create-repository --repository-name name
$ aws ecr create-repository --repository-name webapp

Tag each docker image to push into ECR.

$ docker tag arungupta/greeting:latest <account id>.dkr.ecr.us-east-1.amazonaws.com/greeting:latest
$ docker tag arungupta/name:latest <account id>.dkr.ecr.us-east-1.amazonaws.com/name:latest
$ docker tag arungupta/webapp:latest <account id>.dkr.ecr.us-east-1.amazonaws.com/webapp:latest

Push each docker images to the registry:

$ docker push <account id>.dkr.ecr.us-east-1.amazonaws.com/greeting:latest
$ docker push <account id>.dkr.ecr.us-east-1.amazonaws.com/name:latest
$ docker push <account id>.dkr.ecr.us-east-1.amazonaws.com/webapp:latest

Debug

1. List containers:

   docker container ls -f name=myapp*

2. Get logs for all the containers in the webapp service:

   docker service logs myapp_webapp-service

You are now ready to continue on with the workshop!

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