Docker container with Python Flask app

• In 'app' directory Python flask 'app.py' takes HTML files from "templates" directory
• With CI pipeline to Build and Push Docker image to DockerHub
• With Helm chart
• With CD delivery by ArgoCD

To run docker container

• Build Docker image, from root of the repository directory run this command

docker build . -t flask-app 

• Run Docker Container

docker run --name flask-app --rm -p 8000:5000 -t flask-app

• Connect to the Container on localhost:8000 or localhost:8000/home

• Push Docker image

docker tag flask-app joska99/flask-app:latest
docker push joska99/flask-app:latest

Run Helm

• Create Helm Chart

helm create "helm-chart"

Chart.yaml - Metadata for chart
values.yaml - Define values for chart
templates/ - Contains templates files for Kubernetes resources

• Create Helm package

helm package ./helm-chart

• Install Helm package

helm install flask-app  ./python-flask-chart-0.0.1.tgz

• Delete Helm Chart

helm delete flask-app

Apply ArgoCD deploy pipeline

• Run scripts from root directory of repository to create "app", "argocd" NameSpaces and Deploy ArgoCD service and AppicationSet for deployment

. ./argocd/scripts.sh

• Connect to ArgoCD GUI

argocd-service is IP for GUI accessible on port 80/443/TCP

kubectl port-forward -n argocd svc/argocd-server 8080:443

User Name is Admin
Get password

kubectl get secret argocd-initial-admin-secret -n argocd -o yaml | grep password: | awk '{print $2}' | base64 --decode

"grep" to find the password line, "awk" to output second word, "base64 --decode" to decode the password