web-app.yml

# Example for a HTTP server with a git pulling sidecar
apiVersion: v1
kind: Pod
metadata:
  name: web-app
  labels:
    project: k8spatterns
    pattern: Sidecar
spec:
  containers:
  # Main container is a stock httpd serving from /var/www/html
  - name: app
    image: centos/httpd
    ports:
    - containerPort: 80
    volumeMounts:
    - mountPath: /var/www/html
      name: source
  # Sidecar poll every minute a given repository with git
  - name: poll
    image: bitnami/git
    env:
    - name: SOURCE_REPO
      value: https://github.com/mdn/beginner-html-site-scripted
    command: [ "sh", "-c" ]
    args:
    - |
      git clone $(SOURCE_REPO) .
      while true; do
        sleep 60
        git pull
      done
    workingDir: /var/lib/data
    volumeMounts:
    - mountPath: /var/lib/data
      name: source
  volumes:
  # The shared directory for holding the files
  - emptyDir: {}
    name: source
---
# A service which opens a NodePort is added for your convenience 
# but is not necessarily required for this example:
apiVersion: v1
kind: Service
metadata:
  labels:
    project: k8spatterns
    pattern: Sidecar
  name: web-app
spec:
  ports:
  - name: http
    port: 8080
    protocol: TCP
    targetPort: 80
  selector:
    pattern: Sidecar
  # Just for demo
  type: NodePort