Update Dockerfile

Dockerfile

@@ -1,8 +1,8 @@
 FROM python:3.10-slim
 
-# ----------------------------
+# ------------------------------------------------------
 # System Dependencies (Debian 12 compatible)
-# ----------------------------
+# ------------------------------------------------------
 RUN apt-get update && apt-get install -y \
     build-essential \
     cmake \
@@ -22,26 +22,30 @@ RUN apt-get update && apt-get install -y \
     wget \
     && rm -rf /var/lib/apt/lists/*
 
-# ----------------------------
+# ------------------------------------------------------
 # Install Gmsh CLI
-# ----------------------------
+# ------------------------------------------------------
 RUN wget https://gmsh.info/bin/Linux/gmsh-4.11.1-Linux64.tgz && \
     tar -xzf gmsh-4.11.1-Linux64.tgz && \
     mv gmsh-4.11.1-Linux64 /usr/local/gmsh && \
     ln -s /usr/local/gmsh/bin/gmsh /usr/bin/gmsh
 
-# ----------------------------
-# Install Python dependencies
-# ----------------------------
+# ------------------------------------------------------
+# Install Python Dependencies
+# ------------------------------------------------------
 COPY requirements.txt /app/requirements.txt
 WORKDIR /app
 RUN pip install --upgrade pip
 RUN pip install -r requirements.txt
 
-# ----------------------------
-# Copy application
-# ----------------------------
+# ------------------------------------------------------
+# Copy Application Code
+# ------------------------------------------------------
 COPY . /app
+
+# Print directory tree so we can confirm example_steps exists
+RUN echo "===== DEBUG: Listing /app =====" && ls -R /app
+
 RUN mkdir -p /app/output
 
 ENV PYTHONUNBUFFERED=1