Multi container pod with command sleep k8 - kubernetes

Question

I am trying out mock exams on udemy and have created a multi container pod . but exam result says command is not set correctly on container test2 .I am not able to identify the issue.
apiVersion: v1
kind: Pod
metadata:
creationTimestamp: null
labels:
run: multi-pod
name: multi-pod
spec:
containers:
- image: nginx
name: test1
env:
- name: type
value: demo1
- image: busybox
name: test2
env:
- name: type
value: demo2
command: ["sleep", "4800"]

Answer 1

An easy way to do this is by using imperative kubectl command to generate the yaml for a single container and edit the yaml to add the other container
kubectl run nginx --image=nginx --command -oyaml --dry-run=client -- sh -c 'sleep 1d' > nginx.yaml
In this example sleep 1d is the command.
The generated yaml looks like below.
apiVersion: v1
kind: Pod
metadata:
creationTimestamp: null
labels:
run: nginx
name: nginx
spec:
containers:
- command:
- sh
- -c
- sleep 1d
image: nginx
name: nginx
resources: {}
dnsPolicy: ClusterFirst
restartPolicy: Always
status: {}

Answer 2

Your issue is with your YAML in line 19.
Please keep in mind that YAML syntax is very sensitive for spaces and tabs.
Your issue:
- image: busybox
name: test2
env:
- name: type
value: demo2 ### Issue is in this line, you have one extra space
command: ["sleep", "4800"]
Solution:
Remove space, it wil looks like that:
env:
- name: type
value: demo2
For validation of YAML you can use external validators like yamllint.
If you would paste your YAML to mentioned validator, you will receive error:
(<unknown>): mapping values are not allowed in this context at line 19 column 14
After removing this extra space you will get
Valid YAML!