feat(rathole): add clean Cloudron package using base 5.0.0 with server/client config and health endpoint

CloudronPackages/Rathole/Dockerfile

@@ -0,0 +1,43 @@
+FROM cloudron/base:5.0.0
+
+ARG RATHOLE_VERSION=v0.5.0
+ARG ARCH=x86_64-unknown-linux-gnu
+
+USER root
+RUN apt-get update \
+ && apt-get install -y --no-install-recommends curl ca-certificates tar \
+ && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /app/pkg
+
+# Download Rathole release binary (adjust version/arch via build args)
+RUN set -eux; \
+    url="https://github.com/rathole-org/rathole/releases/download/${RATHOLE_VERSION}/rathole-${ARCH}.tar.gz"; \
+    echo "Fetching ${url}"; \
+    curl -fsSL "$url" -o rathole.tar.gz; \
+    tar -xzf rathole.tar.gz; \
+    rm rathole.tar.gz; \
+    mv rathole /app/pkg/rathole; \
+    chmod +x /app/pkg/rathole; \
+    chown cloudron:cloudron /app/pkg/rathole
+
+# Start script
+COPY start.sh /app/pkg/start.sh
+RUN chmod +x /app/pkg/start.sh && chown cloudron:cloudron /app/pkg/start.sh
+
+WORKDIR /app/code
+RUN mkdir -p /app/data && chown -R cloudron:cloudron /app/data
+
+USER cloudron
+
+ENV APP_PORT=3000 \
+    RATHOLE_MODE=server \
+    RATHOLE_CONFIG_PATH=/app/data/rathole.toml
+
+EXPOSE 3000
+
+HEALTHCHECK --interval=30s --timeout=5s --start-period=20s --retries=3 \
+  CMD curl -fsS http://127.0.0.1:${APP_PORT}/ || exit 1
+
+CMD ["/app/pkg/start.sh"]
+