Issue with apply command in kubectl and .yml file

Question

In a class and working on a kubernetes portion. I copied her json file by hand as it was in a video where we were asked to copy it from her screen. I ran the file through a yml validator and it said it was valid yet I get an error when running the apply command in terminal.

the .yml file is as follows:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  selector:
    matchLabels:
      app: nginx
  replicas: 2
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
        - name: nginx
          image: 'nginx:1.14.2'
          ports:
            - 'containerPort:80'

when running kubectl apply -f nginx-deployment I get the following error: Error from server (BadRequest): error when creating "nginx-deployment.yml": Deployment in version "v1" cannot be handled as a Deployment: json: cannot unmarshal string into Go struct field Container.spec.template.spec.containers.ports of type v1.ContainerPort

Answer 1

It's telling you that this portion:

ports:
            - 'containerPort:80'

is a string and its expecting an integer. You cannot have 'containerport' here. You could have 80 as an integer. But not a string.