Using “oc patch” command in multi-container Pods

I recently ran into a scenario wherein I had to add port in a deploymentConfig(DC) file having multiple containers. “oc edit” is a quite handy command but it will open an editor thereby not useful when automating the updation. Let us take a look at the DC file and apply “oc patch” command on it to update certain fields.

apiVersion: v1
kind: DeploymentConfig
metadata:
  name: test-deploy
  labels:
    app: test-deploy
spec:
  replicas: 1
  strategy:
    type: Rolling
  template:
    metadata:
      labels:
        app: test-deploy
      name: test-deploy
    spec:
      containers:
      - name: my-first-image
        image: image1
        ports:
        - containerPort: 8080
          protocol: TCP - name: my-second-image image…