As can be easily guessed, the container does just that. It calls a Kubernetes manifest using kubectl.
In this example $MANIFEST_DATA and $KUBECONFIG_DATA is the base64 encoded string based on the Manifest and kubeconfig.
Example:
cat $FILE | base64
Run the container:
docker run --rm -it \
-e MANIFEST_DATA=$MANIFEST_DATA \
-e KUBECONFIG_DATA=$KUBECONFIG_DATA \
quving/kube-yaml-manifest:latest