connect HF to correct port

Dockerfile

@@ -2,10 +2,6 @@
 FROM python:3.11-slim
 
 # 2. Set Environment Variables
-# - DEBIAN_FRONTEND: Prevents installers from asking interactive questions
-# - PYTHONUNBUFFERED/PYTHONDONTWRITEBYTECODE: Standard Python-in-Docker settings
-# - PYVISTA_OFF_SCREEN/DISPLAY: Crucial for running PyVista headless (off-screen)
-#   by telling it to use a "virtual" display at address :99
 ENV DEBIAN_FRONTEND=noninteractive \
     PYTHONUNBUFFERED=1 \
     PYTHONDONTWRITEBYTECODE=1 \
@@ -15,10 +11,9 @@ ENV DEBIAN_FRONTEND=noninteractive \
     DISPLAY=:99 \
     VTK_SILENCE_GET_VOID_POINTER_WARNINGS=1
 
-# 3. Install System Dependencies
-# Added 'git' here because we need it to clone aqc-research
+# 3. Install System Dependencies (PyVista/VTK headless + nginx + Xvfb)
 RUN apt-get update && apt-get install -y --no-install-recommends \
-  build-essential cmake wget xvfb nginx git \
+    build-essential cmake wget xvfb nginx \
     libosmesa6 libosmesa6-dev \
     libgl1 libgl1-mesa-dev \
     libegl1 libegl1-mesa-dev \
@@ -31,54 +26,15 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 RUN useradd -m -u 1000 user
 WORKDIR /home/user/app
 
-# 5. Install Python dependencies (optimized)
-# We copy *only* requirements.txt first and install it.
-# This "layer" is cached by Docker. If you only change app.py later,
-# Docker skips this step, making builds much faster.
+# 5. Install Python dependencies (cached layer)
 COPY requirements.txt .
 RUN python3 -m pip install --upgrade pip setuptools wheel \
  && python3 -m pip install --no-cache-dir -r requirements.txt
 
 # 6. Copy the rest of the application code
-# This copies app.py, delta_impulse_generator.py, etc.
-# We set the owner to our new 'user'.
 COPY --chown=user:user . .
 COPY docker/nginx.conf /etc/nginx/nginx.conf
 
-# ---------------------------------------------------------------------------
-# Create the 'aqc_venv' and install dependencies
-# ---------------------------------------------------------------------------
-RUN python3 -m venv utils/aqc_venv && \
-    # 1. Upgrade pip inside the new venv
-    utils/aqc_venv/bin/pip install --upgrade pip setuptools wheel && \
-    # 2. Install EXACT versions FIRST (before any library that has qiskit dependency)
-    utils/aqc_venv/bin/pip install \
-        "qiskit==1.3.1" \
-        "qiskit-aer==0.16.4" \
-        "qiskit-algorithms==0.4.0" \
-        "qiskit-qasm3-import==0.6.0" \
-        "qiskit-experiments==0.6.1" \
-        "qiskit-ibm-experiment==0.4.8" \
-        "numpy==1.26.4" \
-        "scipy==1.16.3" \
-        "sympy==1.14.0" \
-        "openfermion==1.7.1" \
-        "cirq-core==1.6.1" \
-        "physics-tenpy==1.0.7" \
-        "lmfit==1.3.4" \
-        "h5py==3.15.1" && \
-    # 3. Clone aqc-research inside utils
-    cd utils && \
-    git clone https://github.com/bjader/aqc-research.git && \
-    # 4. Install aqc-research with --no-deps (won't upgrade qiskit)
-    /home/user/app/utils/aqc_venv/bin/pip install --no-deps ./aqc-research && \
-    # 5. Install adapt-aqc with --no-deps
-    /home/user/app/utils/aqc_venv/bin/pip install --no-deps -e ./adapt-aqc && \
-    # 6. VERIFY: Print versions to confirm
-    echo "=== Qiskit versions ===" && \
-    /home/user/app/utils/aqc_venv/bin/pip list | grep -i qiskit && \
-    /home/user/app/utils/aqc_venv/bin/python --version
-
 # Prepare writable directories for nginx (running as non-root later)
 RUN mkdir -p /tmp/nginx/body /tmp/nginx/proxy /tmp/nginx/fastcgi /tmp/nginx/uwsgi /tmp/nginx/scgi \
   && touch /tmp/nginx.access.log /tmp/nginx.error.log \
@@ -87,33 +43,24 @@ RUN mkdir -p /tmp/nginx/body /tmp/nginx/proxy /tmp/nginx/fastcgi /tmp/nginx/uwsg
 # 7. Switch to the non-root user
 USER user
 
-# Note: We do NOT set PYTHONPATH for adapt-aqc here because it is installed 
-# inside the 'aqc_venv' which your code calls via subprocess.
-
-# Default runtime configuration for multiprocess layout
+# --- HF Spaces-safe runtime defaults ---
+# Do NOT set APP_PORT (or any internal app ports) in the image.
+# Hugging Face provides $PORT and expects you to bind to 0.0.0.0:$PORT.
 ENV OMP_NUM_THREADS=1 \
-  APP_HOST=127.0.0.1 \
-  APP_PORT=8700 \
-  EM_APP_PORT=8701 \
-  QLBM_APP_PORT=8702 \
-  EM_HOST=127.0.0.1 \
-  QLBM_HOST=127.0.0.1 \
-  EM_IFRAME_SRC=/em/ \
-  QLBM_IFRAME_SRC=/qlbm/
+    APP_HOST=0.0.0.0 \
+    EM_IFRAME_SRC=/em/ \
+    QLBM_IFRAME_SRC=/qlbm/
 
-# 8. Expose the port the app will run on
+# 8. Expose the default HF port (HF will still set $PORT at runtime)
 EXPOSE 7860
 
-# 9. Healthcheck (good practice for hosting platforms)
+# 9. Healthcheck
 HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
   CMD wget --no-verbose --tries=1 --spider http://localhost:${PORT:-7860}/ || exit 1
 
 # 10. Start Command
-# This command does two things:
-# a) Starts the X Virtual FrameBuffer (Xvfb) in the background (&) on display :99
-# b) 'exec' runs your app. Using 'exec' is important as it makes the Python
-#    process the main one, which properly handles signals (like stopping the container).
-#    '--host 0.0.0.0' is ESSENTIAL to make the server accessible from outside the container.
-CMD ["sh", "-c", "Xvfb :99 -screen 0 1024x768x24 >/dev/null 2>&1 & nginx && exec python3 app.py --server --host ${APP_HOST:-127.0.0.1} --port ${APP_PORT:-8700}"]
-
-
+# - Start Xvfb (needed for headless VTK)
+# - Start nginx (as per your setup)
+# - Exec python so it becomes PID 1
+# IMPORTANT: do NOT pass --host/--port overrides here; let app.py use $PORT.
+CMD ["sh", "-c", "Xvfb :99 -screen 0 1024x768x24 >/dev/null 2>&1 & nginx && exec python3 app.py"]

Dockerfile_1

@@ -0,0 +1,119 @@
+# 1. Start from a slim Python 3.11 base image
+FROM python:3.11-slim
+
+# 2. Set Environment Variables
+# - DEBIAN_FRONTEND: Prevents installers from asking interactive questions
+# - PYTHONUNBUFFERED/PYTHONDONTWRITEBYTECODE: Standard Python-in-Docker settings
+# - PYVISTA_OFF_SCREEN/DISPLAY: Crucial for running PyVista headless (off-screen)
+#   by telling it to use a "virtual" display at address :99
+ENV DEBIAN_FRONTEND=noninteractive \
+    PYTHONUNBUFFERED=1 \
+    PYTHONDONTWRITEBYTECODE=1 \
+    HOME=/home/user \
+    PATH=/home/user/.local/bin:$PATH \
+    PYVISTA_OFF_SCREEN=true \
+    DISPLAY=:99 \
+    VTK_SILENCE_GET_VOID_POINTER_WARNINGS=1
+
+# 3. Install System Dependencies
+# Added 'git' here because we need it to clone aqc-research
+RUN apt-get update && apt-get install -y --no-install-recommends \
+  build-essential cmake wget xvfb nginx git \
+    libosmesa6 libosmesa6-dev \
+    libgl1 libgl1-mesa-dev \
+    libegl1 libegl1-mesa-dev \
+    libglu1-mesa libglu1-mesa-dev \
+    libgles2-mesa-dev \
+    libx11-6 libxt6 libxrender1 libsm6 libice6 \
+    && rm -rf /var/lib/apt/lists/*
+
+# 4. Create a non-root user for security
+RUN useradd -m -u 1000 user
+WORKDIR /home/user/app
+
+# 5. Install Python dependencies (optimized)
+# We copy *only* requirements.txt first and install it.
+# This "layer" is cached by Docker. If you only change app.py later,
+# Docker skips this step, making builds much faster.
+COPY requirements.txt .
+RUN python3 -m pip install --upgrade pip setuptools wheel \
+ && python3 -m pip install --no-cache-dir -r requirements.txt
+
+# 6. Copy the rest of the application code
+# This copies app.py, delta_impulse_generator.py, etc.
+# We set the owner to our new 'user'.
+COPY --chown=user:user . .
+COPY docker/nginx.conf /etc/nginx/nginx.conf
+
+# ---------------------------------------------------------------------------
+# Create the 'aqc_venv' and install dependencies
+# ---------------------------------------------------------------------------
+RUN python3 -m venv utils/aqc_venv && \
+    # 1. Upgrade pip inside the new venv
+    utils/aqc_venv/bin/pip install --upgrade pip setuptools wheel && \
+    # 2. Install EXACT versions FIRST (before any library that has qiskit dependency)
+    utils/aqc_venv/bin/pip install \
+        "qiskit==1.3.1" \
+        "qiskit-aer==0.16.4" \
+        "qiskit-algorithms==0.4.0" \
+        "qiskit-qasm3-import==0.6.0" \
+        "qiskit-experiments==0.6.1" \
+        "qiskit-ibm-experiment==0.4.8" \
+        "numpy==1.26.4" \
+        "scipy==1.16.3" \
+        "sympy==1.14.0" \
+        "openfermion==1.7.1" \
+        "cirq-core==1.6.1" \
+        "physics-tenpy==1.0.7" \
+        "lmfit==1.3.4" \
+        "h5py==3.15.1" && \
+    # 3. Clone aqc-research inside utils
+    cd utils && \
+    git clone https://github.com/bjader/aqc-research.git && \
+    # 4. Install aqc-research with --no-deps (won't upgrade qiskit)
+    /home/user/app/utils/aqc_venv/bin/pip install --no-deps ./aqc-research && \
+    # 5. Install adapt-aqc with --no-deps
+    /home/user/app/utils/aqc_venv/bin/pip install --no-deps -e ./adapt-aqc && \
+    # 6. VERIFY: Print versions to confirm
+    echo "=== Qiskit versions ===" && \
+    /home/user/app/utils/aqc_venv/bin/pip list | grep -i qiskit && \
+    /home/user/app/utils/aqc_venv/bin/python --version
+
+# Prepare writable directories for nginx (running as non-root later)
+RUN mkdir -p /tmp/nginx/body /tmp/nginx/proxy /tmp/nginx/fastcgi /tmp/nginx/uwsgi /tmp/nginx/scgi \
+  && touch /tmp/nginx.access.log /tmp/nginx.error.log \
+  && chown -R user:user /tmp/nginx /tmp/nginx.access.log /tmp/nginx.error.log
+
+# 7. Switch to the non-root user
+USER user
+
+# Note: We do NOT set PYTHONPATH for adapt-aqc here because it is installed 
+# inside the 'aqc_venv' which your code calls via subprocess.
+
+# Default runtime configuration for multiprocess layout
+ENV OMP_NUM_THREADS=1 \
+  APP_HOST=127.0.0.1 \
+  APP_PORT=8700 \
+  EM_APP_PORT=8701 \
+  QLBM_APP_PORT=8702 \
+  EM_HOST=127.0.0.1 \
+  QLBM_HOST=127.0.0.1 \
+  EM_IFRAME_SRC=/em/ \
+  QLBM_IFRAME_SRC=/qlbm/
+
+# 8. Expose the port the app will run on
+EXPOSE 7860
+
+# 9. Healthcheck (good practice for hosting platforms)
+HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
+  CMD wget --no-verbose --tries=1 --spider http://localhost:${PORT:-7860}/ || exit 1
+
+# 10. Start Command
+# This command does two things:
+# a) Starts the X Virtual FrameBuffer (Xvfb) in the background (&) on display :99
+# b) 'exec' runs your app. Using 'exec' is important as it makes the Python
+#    process the main one, which properly handles signals (like stopping the container).
+#    '--host 0.0.0.0' is ESSENTIAL to make the server accessible from outside the container.
+CMD ["sh", "-c", "Xvfb :99 -screen 0 1024x768x24 >/dev/null 2>&1 & nginx && exec python3 app.py --server --host ${APP_HOST:-127.0.0.1} --port ${APP_PORT:-8700}"]
+
+