Update installation instructions for Linux

Author: g-h-anna

index.html

@@ -123,7 +123,13 @@ <h3 class="title is-5">Clone the repository</h3>
 
             <h3 class="title is-5">Installation (Linux)</h3>
             <pre><code>pip install -r requirements.txt
-...</code></pre>
+            cd sam2
+            pip install -e .
+            cd..
+            pip install --index-url https://download.pytorch.org/whl/cu121 torch torchvision torchaudio
+            cd ../checkpoints
+            ./download_chckpts.sh
+            </code></pre>
 
             <h3 class="title is-5">Run the tool</h3>
             <pre><code>python main.py</code></pre>