title: Error: unable to prepare context: path " " not found while building and tagging docker image
body: <p>In continuation of my previous <a href="https://stackoverflow.com/questions/60589455/no-github-actions-workflows-detected-in-repository">question</a></p>
  
  <p>I am trying to build and push a docker image to Amazon ECR with GitHub Actions by following this <a href="https://dev.to/wingkwong/building-and-pushing-a-docker-image-to-amazon-ecr-with-github-actions-on0" rel="nofollow noreferrer">tutorial</a></p>
  
  <p>But I am getting the following error :</p>
  
  <pre><code>Run docker build \ 
  unable to prepare context: path " " not found
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/zCipa.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/zCipa.png" alt="enter image description here"></a></p>
  
  <p>Can anyone help me resolve this issue??</p>
  
  <p><strong>Edit 1:</strong></p>
  
  <p>As stated by @banyan I have created an <code>app</code> directory
  <a href="https://i.stack.imgur.com/uT9lu.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/uT9lu.png" alt="enter image description here"></a></p>
  
  <p><a href="https://i.stack.imgur.com/6oO9G.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/6oO9G.png" alt="enter image description here"></a></p>
  
  <p>But still I am getting the same error.</p>
  
  <p>To know more, please go through <a href="https://github.com/bhavya121999/hello-world-docker-action" rel="nofollow noreferrer">this</a></p>