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Run Docker Compose

Here’s how to run docker-compose. I have an Icecast docker-compose.yml file. Icecast is an audio streaming server.

version: "2"
 
services:
  icecast:
    image: moul/icecast
    environment:
      - ICECAST_SOURCE_PASSWORD=secret
      - ICECAST_ADMIN_PASSWORD=secret
      - ICECAST_PASSWORD=secret
      - ICECAST_RELAY_PASSWORD=secret
    ports:
      - "8000:8000"
    restart: always

To run Icecast in a container , I run docker-compose in the background.

docker-compose up -d

Check to see if Icecast is running on your browser.

http://localhost:8000

To stop the Icecast container, I simply stop the docker-compose.

docker-compose stop

Here are the other docker commands you can run.

docker images
docker ps
docker-compose ps

Docker to GCR

Here’s a couple of steps to move a Docker image to the Google Container Registry.

Create a container image.

docker build -t gcr.io/${PROJECT_ID}/my-app:v1 .

Push image to GCR.

docker push gcr.io/[PROJECT-ID]/[IMAGE]

Static Website on GKE

Here’s how to run your web application on Google Kubernetes Engine.

Create a Dockerfile. Place your web pages in the public-html directory.

FROM httpd:2.4
COPY ./public-html/ /usr/local/apache2/htdocs/

Build a container image for Google Container Registry (GCR).

# set your project
export PROJECT_ID=[project_id]
# build a container image
docker build -t gcr.io/${PROJECT_ID}/your-app:v1 .
# verify docker images
docker images

Upload the container image to GCR.

# authenticate
gcloud auth configure-docker
# upload image
docker push gcr.io/${PROJECT_ID}/your-app:v1

Create a container GKE cluster.

# create cluster
gcloud container clusters create your-app-cluster \
--num-nodes=2
# check clusters
gcloud compute instances list

Deploy your web application.

# create deployment
kubectl create deployment your-app \
--image=gcr.io/${PROJECT_ID}/your-app:v1
# see the pods
kubectl get pods

Expose your application to the Internet.

# expose your application
kubectl expose deployment your-app \
--type=LoadBalancer \
--port 80 \
--target-port 80
# get the external ip address
kubectl get service

Scale your application.

# scale to 3 replicas
kubectl scale deployment your-app --replicas=3
# display the replicas
kubectl get deployment your-app

Cleanup.

kubectl delete service your-app
gcloud container clusters delete your-app-cluster