Added dockerfile improvements

modelcontextprotocol/Dockerfile

@@ -4,21 +4,31 @@ FROM ghcr.io/astral-sh/uv:python3.12-bookworm-slim AS builder
 # Set environment variables for build
 ENV PYTHONDONTWRITEBYTECODE=1 \
     PYTHONUNBUFFERED=1 \
-    PIP_NO_CACHE_DIR=1
+    PIP_NO_CACHE_DIR=1 \
+    UV_COMPILE_BYTECODE=1 \
+    UV_LINK_MODE=copy
 
 # Install the project into `/app`
 WORKDIR /app
 
-ADD . /app
+# Copy only dependency files first (better caching)
+COPY pyproject.toml uv.lock ./
+COPY version.py ./
+COPY README.md ./
 
 # Create a virtual environment and install dependencies
 RUN python -m venv /app/.venv
 ENV PATH="/app/.venv/bin:$PATH"
 RUN uv sync --no-cache-dir --no-dev --python /app/.venv/bin/python
 
+# Copy the rest of the application
+COPY . /app
+
 FROM python:3.12-slim-bookworm AS runtime
 
-RUN groupadd -r appuser && useradd -r -g appuser -m -d /home/appuser appuser
+# Create non-root user with specific UID/GID for better security
+RUN groupadd -r -g 1001 appuser && \
+    useradd -r -g appuser -u 1001 -m -d /home/appuser appuser
 
 WORKDIR /appuser
 
@@ -27,11 +37,18 @@ COPY --from=builder --chown=appuser:appuser /app /appuser
 # Set the PATH to use the virtual environment
 ENV PATH="/appuser/.venv/bin:$PATH"
 
-ENV MCP_TRANSPORT="stdio"
-ENV MCP_HOST="0.0.0.0"
-ENV MCP_PORT="8000"
-ENV MCP_PATH="/"
+# Environment variables with defaults
+ENV MCP_TRANSPORT="stdio" \
+    MCP_HOST="0.0.0.0" \
+    MCP_PORT="8000" \
+    MCP_PATH="/"
+
+# Simple health check for HTTP transports (without external dependencies)
+HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
+    CMD if [ "$MCP_TRANSPORT" = "sse" ] || [ "$MCP_TRANSPORT" = "streamable-http" ]; then \
+        python -c "import urllib.request; urllib.request.urlopen('http://localhost:$MCP_PORT$MCP_PATH', timeout=5)" || exit 1; \
+        else exit 0; fi
 
 USER appuser
 
-ENTRYPOINT exec python server.py --transport "$MCP_TRANSPORT" --host "$MCP_HOST" --port "$MCP_PORT" --path "$MCP_PATH"
+ENTRYPOINT ["sh", "-c", "exec python server.py --transport \"$MCP_TRANSPORT\" --host \"$MCP_HOST\" --port \"$MCP_PORT\" --path \"$MCP_PATH\""]