Update Dockerfile

Dockerfile

@@ -7,6 +7,9 @@ WORKDIR /app
 # Copy the .env file containing the API Key into the container 
 COPY ./.env /app/.env
 
+# Copy the banner image into the container
+COPT ./youtube_playlist_organizer.png /app/youtube_playlist_organizer.png
+
 # Copy your FastAPI application code into the container
 COPY ./app.py /app/app.py