Initial commit: breakpilot-lehrer - Lehrer KI Platform

Services: Admin-Lehrer, Backend-Lehrer, Studio v2, Website,
Klausur-Service, School-Service, Voice-Service, Geo-Service,
BreakPilot Drive, Agent-Core

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backend-lehrer/Dockerfile

@@ -0,0 +1,68 @@
+# ==============================================
+# BreakPilot Backend-Lehrer
+# Lehrer-spezifische APIs (Port 8001)
+# ==============================================
+
+# Build stage
+FROM python:3.12-slim-bookworm AS builder
+
+WORKDIR /app
+
+# Install build dependencies
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    build-essential \
+    libpq-dev \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy requirements first for better caching
+COPY requirements.txt .
+
+# Create virtual environment and install dependencies
+RUN python -m venv /opt/venv
+ENV PATH="/opt/venv/bin:$PATH"
+RUN pip install --no-cache-dir --upgrade pip && \
+    pip install --no-cache-dir -r requirements.txt
+
+# Runtime stage
+FROM python:3.12-slim-bookworm
+
+WORKDIR /app
+
+# Install runtime dependencies for WeasyPrint and OpenCV
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    libpango-1.0-0 \
+    libpangocairo-1.0-0 \
+    libgdk-pixbuf-2.0-0 \
+    libffi-dev \
+    shared-mime-info \
+    libgl1 \
+    libglib2.0-0 \
+    curl \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy virtual environment from builder
+COPY --from=builder /opt/venv /opt/venv
+ENV PATH="/opt/venv/bin:$PATH"
+
+# Create non-root user
+RUN useradd --create-home --shell /bin/bash appuser
+
+# Copy application code
+COPY --chown=appuser:appuser . .
+
+# Switch to non-root user
+USER appuser
+
+# Environment variables
+ENV PYTHONUNBUFFERED=1
+ENV PYTHONDONTWRITEBYTECODE=1
+
+# Expose port
+EXPOSE 8001
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
+    CMD curl -f http://127.0.0.1:8001/health || exit 1
+
+# Run the application
+CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8001"]