Ghaymah SRE exam submission - Mohamed Adel

q1-deploy-monitor/Dockerfile

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+# ---- Base image ----
+FROM python:3.12-slim
+
+# ---- Metadata ----
+LABEL maintainer="Mohamed Adel"
+LABEL description="Simple Flask API with /health endpoint, deployed on Ghaymah Containers"
+
+# ---- Working directory ----
+WORKDIR /app
+
+# ---- Install dependencies first (better layer caching) ----
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# ---- Copy application code ----
+COPY app.py .
+
+# ---- Create non-root user for security ----
+RUN useradd -m appuser
+USER appuser
+
+# ---- Expose the app port ----
+EXPOSE 8080
+
+# ---- Container-level healthcheck (used by Ghaymah / Docker runtime) ----
+HEALTHCHECK --interval=30s --timeout=5s --start-period=10s --retries=3 \
+  CMD python -c "import urllib.request; urllib.request.urlopen('http://localhost:8080/health')" || exit 1
+
+# ---- Run the app with a production WSGI server ----
+CMD ["gunicorn", "--bind", "0.0.0.0:8080", "--workers", "2", "app:app"]