#Cheatsheet - testing dfasds

##The dropwizard app

Dropwizard

• Java framework for developing ops-friendly, high-performance, RESTful web services

Building dw app:

mvn clean install

Running the dw app:

java -jar target/hello-world-0.0.1.jar server config.yml

Making a few requests:

curl "localhost:8080/hello/java-community"
curl "localhost:8081/health"
curl "localhost:8081/threads"
curl "localhost:8081/metrics"

##Dockerizing the dropwizard app

docker --help

Build docker image:

docker build -t hello-world .

Pushing image to remote registry(DockerHub):

• skip this step

docker build -t docker.io/cataliniquest/hello-world . && docker push docker.io/cataliniquest/hello-world

Pulling image from remote registry:

• skip this step

docker pull cataliniquest/hello-world

View docker images:

docker images 

Creating a container from the docker image:

docker run --name hello-world-1 -p 8080:8080 -P cataliniquest/hello-world

There's no magic to it, "just" a kernel level feture of managing processes

ps auxwww | grep java

View information about containers:

docker ps
docker port hello-world-1
docker inspect hello-world-1

Connect to a running container

docker exec -ti hello-world-1 /bin/bash

Getting rid of containers

docker stop hello-world-1
docker rm hello-world-1

Getting rid of images:

docker rmi -f $(docker images -q)