feat: include uv/uvx (musl static) in image; fix Dockerfile; verify uvx present

Author: masterkain

Dockerfile

@@ -11,8 +11,23 @@ ENV PIP_DISABLE_PIP_VERSION_CHECK=1 \
 ARG MCP_PROXY_VERSION="0.9.0"
 COPY requirements.txt /tmp/requirements.txt
 RUN set -eux; \
-    apk add --no-cache python3 py3-pip git bash tini ca-certificates; \
+    apk add --no-cache python3 py3-pip git bash tini ca-certificates wget; \
     npm i -g --omit=dev tsx; \
+    # Install uv statically (musl) via GitHub release tarball
+    case "${TARGETARCH:-amd64}" in \
+      amd64) UV_ARCH=x86_64 ;; \
+      arm64) UV_ARCH=aarch64 ;; \
+      *) echo "Unsupported TARGETARCH: ${TARGETARCH}"; exit 1 ;; \
+    esac; \
+    UV_URL="https://github.com/astral-sh/uv/releases/latest/download/uv-${UV_ARCH}-unknown-linux-musl.tar.gz"; \
+    wget -qO /tmp/uv.tar.gz "$UV_URL"; \
+    mkdir -p /opt/uvtmp; \
+    tar -xzf /tmp/uv.tar.gz -C /opt/uvtmp; \
+    if [ -f /opt/uvtmp/uv ]; then mv /opt/uvtmp/uv /usr/local/bin/uv; \
+    else f=$(find /opt/uvtmp -type f -name uv | head -n1); [ -n "$f" ] && mv "$f" /usr/local/bin/uv; fi; \
+    chmod +x /usr/local/bin/uv; \
+    ln -sf /usr/local/bin/uv /usr/local/bin/uvx; \
+    rm -rf /opt/uvtmp /tmp/uv.tar.gz; \
     python3 -m venv /opt/mcp; \
     . /opt/mcp/bin/activate; \
     pip install --no-cache-dir --upgrade pip; \