Optimize Dockerfile and add .dockerignore for Hugging Face Spaces

.dockerignore

@@ -0,0 +1,9 @@
+.git
+.gitignore
+__pycache__
+venv
+.env
+.DS_Store
+*.pyc
+*.pyo
+*.pyd

Dockerfile

@@ -16,19 +16,22 @@ ENV HOME=/home/user \
 # Set the working directory to the user's home directory
 WORKDIR $HOME/app
 
-# Copy the current directory contents into the container at $HOME/app setting the owner to the user
+# Copy requirements.txt first to leverage Docker cache
+COPY --chown=user requirements.txt $HOME/app/requirements.txt
+
+# Install requirements
+RUN pip install --no-cache-dir --upgrade -r requirements.txt
+
+# Copy the rest of the application
 COPY --chown=user . $HOME/app
 
 # Create the webfonts directory and download fonts
-# We do this here to avoid storing binary files in the git repo, but ensure they are available locally in the container.
+# Use -f to fail on error, -L to follow redirects
 RUN mkdir -p static/webfonts && \
-    curl -o static/webfonts/fa-solid-900.woff2 https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0/webfonts/fa-solid-900.woff2 && \
-    curl -o static/webfonts/fa-solid-900.ttf https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0/webfonts/fa-solid-900.ttf && \
-    curl -o static/webfonts/fa-regular-400.woff2 https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0/webfonts/fa-regular-400.woff2 && \
-    curl -o static/webfonts/fa-regular-400.ttf https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0/webfonts/fa-regular-400.ttf
-
-# Install requirements
-RUN pip install --no-cache-dir --upgrade -r requirements.txt
+    curl -fLo static/webfonts/fa-solid-900.woff2 https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0/webfonts/fa-solid-900.woff2 && \
+    curl -fLo static/webfonts/fa-solid-900.ttf https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0/webfonts/fa-solid-900.ttf && \
+    curl -fLo static/webfonts/fa-regular-400.woff2 https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0/webfonts/fa-regular-400.woff2 && \
+    curl -fLo static/webfonts/fa-regular-400.ttf https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0/webfonts/fa-regular-400.ttf
 
 # Expose port 7860
 EXPOSE 7860