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Dockerfile.debian-builder

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+# Dockerfile.debian-builder
+# Debian-based container for building .deb packages from pre-built Go binaries
+#
+# This image contains only Debian packaging tools - NO build tools like gcc or golang.
+# The Go binaries are built on the Fedora host and mounted into this container.
+
+FROM debian:bookworm-slim
+
+LABEL maintainer="Steven Tracey <steven@rvits.net>"
+LABEL description="FeatherDDNS Debian package builder"
+
+# Install Debian packaging tools only (no build toolchain)
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    debhelper \
+    devscripts \
+    dpkg-dev \
+    fakeroot \
+    lintian \
+    gzip \
+    && apt-get clean \
+    && rm -rf /var/lib/apt/lists/*
+
+# Create working directories
+RUN mkdir -p /build /dist
+
+# Set working directory
+WORKDIR /build
+
+# Run as root for packaging operations (writing to mounted volumes)
+# This is safe since we're only packaging pre-built binaries
+
+# Default command shows help
+CMD ["echo", "Use: podman run ... debian-builder /build/scripts/build-deb.sh"]