input: Write a function to generate a Kubernetes pod setup that publishes a tweet every 5 minutes. The function should return the YAML configuration as a string. If no valid image path is provided, the function should return an appropriate error message.
  def create_tweet_pod_setup(image_path):
      if not image_path:
          return "Error: No image path provided."
      pod_yaml = f'''apiVersion: v1
  kind: Pod
  metadata:
    name: tweet-publisher
  spec:
    containers:
      - name: tweet-publisher
        image: {image_path}
        command:
          - sh
          - -c
          - 'crontab -lcrontab && while true; do python publish-tweet.py && crontab -l | {{ cat; echo "*/5 * * * * python publish-tweet.py"; }} | crontab -; sleep 31622400; done'
        volumeMounts:
          - mountPath: /crontab/crontab
            subPath: crontab
            name: cronmount
    volumes:
      - name: cronmount
        configMap:
          name: tweet-cron
  ---
  apiVersion: v1
  kind: ConfigMap
  metadata:
    name: tweet-cron
  data:
    crontab: "* * * * * python publish-tweet.py"'''
      return pod_yaml
  
  assert create_tweet_pod_setup("example/tweet-publisher:latest").startswith("apiVersion: v1") 
  assert create_tweet_pod_setup("") == "Error: No image path provided."
output: def create_tweet_pod_setup(image_path):
      if not image_path:
          return "Error: No image path provided."
      pod_yaml = f'''apiVersion: v1
  kind: Pod
  metadata:
    name: tweet-publisher
  spec:
    containers:
      - name: tweet-publisher
        image: {image_path}
        command:
          - sh
          - -c
          - 'crontab -lcrontab && while true; do python publish-tweet.py && crontab -l | {{ cat; echo "*/5 * * * * python publish-tweet.py"; }} | crontab -; sleep 31622400; done'
        volumeMounts:
          - mountPath: /crontab/crontab
            subPath: crontab
            name: cronmount
    volumes:
      - name: cronmount
        configMap:
          name: tweet-cron
  ---
  apiVersion: v1
  kind: ConfigMap
  metadata:
    name: tweet-cron
  data:
    crontab: "* * * * * python publish-tweet.py"'''
      return pod_yaml