Add mcp server for ai docs (#2872)

[ ] Check if this is a typo or other quick fix and ignore the rest :)

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---------

Signed-off-by: ltagliaferri <[email protected]>
Co-authored-by: Claude Sonnet 4.5 (1M context) <[email protected]>

Author: ltagliaferri

scripts/Dockerfile.ai-docs

@@ -11,21 +11,16 @@ LABEL org.opencontainers.image.licenses="Apache-2.0"
 LABEL dev.chainguard.ai-docs.version="latest"
 LABEL dev.chainguard.ai-docs.mcp-enabled="true"
 
-# Install Python and dependencies for MCP server
-USER root
-RUN apk add --no-cache python3 py3-pip && \
-    pip3 install --no-cache-dir --break-system-packages -r /tmp/mcp-requirements.txt || true
-USER nonroot
-
 # Create directory structure
 WORKDIR /docs
 
-# Copy MCP requirements first (for caching)
+# Copy MCP requirements first (for layer caching)
 COPY mcp-requirements.txt /tmp/
 
-# Install MCP dependencies
+# Install Python and MCP dependencies
 USER root
-RUN pip3 install --no-cache-dir --break-system-packages -r /tmp/mcp-requirements.txt
+RUN apk add --no-cache python3 py3-pip && \
+    pip3 install --no-cache-dir --break-system-packages -r /tmp/mcp-requirements.txt
 USER nonroot
 
 # Copy documentation and verification files