Getting Drupal 8 Field image in Twig

{% for key, item in node.field_image.value %}
  <img src="{{ file_url(content.field_image[key]['#item'].entity.uri.value) }}"
       alt="{{ item.alt }}" />
{% endfor %}

<img  src="{{ file_url(content.field_image['#items'].entity.uri.value) }}" alt="{{ node.field_image.alt }}" />
//OR
<img src="{{ file_url(content.field_image['#items'][0].entity.uri.value) }}" alt="{{ node.field_image.alt }}" />

<img  src="{{ file_url(content.field_image['#items'].entity.uri.value) }}" alt="{{ paragraph.field_image.alt }}" />
// OR
<img src="{{ file_url(content.field_image['#items'][0].entity.uri.value) }}" alt="{{ paragraph.field_image.alt }}" />

<img src="{{ file_url(content.field_image|field_target_entity.uri.value) }}" alt="{{ content.field_image|field_raw('alt') }}" />