Using a flex container, how can I give a child image its full width while right aligning all of the flex children?

I'm trying to achieve this layout where there is an image that is a set width and the text next to it is truncated if it is too long. I also want the content of flex container to be right aligned.

I have been playing with this at https://codepen.io/zeckdude/pen/jOQeRoZ and when I set flex: 1 on the paragraph in order to ensure that the image gets its full width, I can't figure out how to still right align all of the content. Unfortunately, I still end up with this result:

Here's the code that I have in the codepen:

.container {
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: 300px;
  padding: 16px;
  background-color: gray;
}

hr {
  width: 100%;
}

.flex-container {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 16px;
  width: 100%;
}

/* Make the image container take 50px width */
.flex-container .image-container {
  width: 50px;
  height: 50px;
  border-radius: 25px;
  overflow: hidden;
}

/* Make the image take its full width and height within the image container */
.flex-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Make the text truncate with ellipsis when there's not enough space */
.flex-container p {
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

<div class="container">
  <div class="flex-container">
<div class="image-container">
  <img src="https://picsum.photos/id/64/200" alt="Image">
</div>
<p>Your long text goes here and can keep going for a long time</p>
  </div>
  
  <hr />
  
  <div class="flex-container">
<div class="image-container">
  <img src="https://picsum.photos/id/64/200" alt="Image">
</div>
<p>Short text</p>
  </div>
</div>

Some folks have suggested removing the flex: 1 on the .flex-container p but unfortunately I need that there in order to ensure that the image gets to take its full width. You can see that in this screenshot where I have removed it and the image isn't looking correct:

Solution

Here is a different solution as these contents are dynamic. The changes I have made:

.flex-container .image-container {
    /* overflow: hidden; */
}
.flex-container img {
    width: 50px;
    height: 50px;
    border-radius: 25px;
}
.flex-container p {
    /* flex: 1; */
}

    .container {
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: 300px;
  padding: 16px;
  background-color: gray;
}

hr {
  width: 100%;
}

.flex-container {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 16px;
  width: 100%;
}

/* Make the image container take 50px width */
.flex-container .image-container {
  width: 50px;
  height: 50px;
  border-radius: 25px;
  /* overflow: hidden; */
}

/* Make the image take its full width and height within the image container */
.flex-container img {
  width: 50px;
  height: 50px;
  border-radius: 25px;
  object-fit: cover;
}

/* Make the text truncate with ellipsis when there's not enough space */
.flex-container p {
  /* flex: 1; */
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

<div class="container">
  <div class="flex-container">
    <div class="image-container">
      <div class="image-inner-container">
        <img src="https://picsum.photos/id/64/200" alt="Image">
      </div>
    </div>
    <p>Your long text goes here and can keep going for a long time</p>
  </div>

  <hr />

  <div class="flex-container">
    <div class="image-container">
      <div class="image-inner-container">
        <img src="https://picsum.photos/id/64/200" alt="Image">
      </div>
    </div>
    <p style="flex: initial;">Short text</p>
  </div>
</div>