PyLab1.md

Deploy an Python App using image in a external registry (ie Dockerhub)

Build and Push Docker Image to External Registry

docker login

Navigate to project folder with Docker file and run the following commands:

docker build -f Dockerfile -t hello-python:latest .

# Docker Docs: https://docs.docker.com/
# Docker Reference: https://docs.docker.com/reference/

docker image tag ${REMOTE_APP_NAME}:latest ${LOCAL_APP_NAME}:latest

docker image push ${REMOTE_APP_NAME}:latest

Once this is done your app should be up in your private registry on DockerHub. The example we will use the following image on Dockerhub:

docker.io/mrinasugosh/sample-python-app

Get Access to Red Hat OpenShift Workshop Cluster

Use the steps below to get access to a Red Hat OpenShift cluster.

NOTE: Cluster Allocations are limited by time on Open Labs. Please make sure to complete the labs as soon as possible Clusters will shut down approximately 3 to 4hrs after spinning up

1. Navigate to:

https://developer.ibm.com/openlabs/openshift

2. Select "Bring Your Own Application" Openlab

3. You will be asked to sign in with your IBM account.

   • Sign up for a IBM Cloud Account if you don't already have one Sign up here
   • Sign in to your temporary RHOS cluster

Open Red Hat OpenShift Workshop Cluster

1. Once you are in the lab, open the Openshift Console

2. Switch over to "Developer Mode" by selecting the option on the left side panel

3. Add a project workspace to run your apps

4. Create a "demo" project

5. Select "Container Image" as the way to create an application

6. Type in the relevant image reference under "Image name for external reegistry"

7. Oila! You have deployed your image as a running app on Openshift. Wait for the Pod's status to change to Running then navigate to th Network Route to launch the app