feat: reduce container image size by +/- 50% (+/- 4MB)

Dockerfile

@@ -1,14 +1,17 @@
 FROM alpine:3.18.0 AS build
-RUN mkdir -p /build/etc/apk /build/var/run /empty
+RUN mkdir -p /build/etc/apk /build/var/run
 RUN cp -r /etc/apk/* /build/etc/apk/
 RUN apk add --no-cache --initdb -p /build qemu-guest-agent musl
 
 FROM scratch
-COPY --from=build /build/bin /bin
-COPY --from=build /build/etc /etc
-COPY --from=build /build/lib /lib
-COPY --from=build /build/sbin /sbin
-COPY --from=build /build/usr /usr
-COPY --from=build /build/var /var
+COPY --from=build /build/usr/bin/qemu-ga /usr/bin/qemu-ga
+COPY --from=build /build/lib/ld-musl-x86_64.so.1 /lib/ld-musl-x86_64.so.1
+COPY --from=build /build/usr/lib/libnuma.so.1 /usr/lib/libnuma.so.1
+COPY --from=build /build/usr/lib/liburing.so.2 /usr/lib/liburing.so.2
+COPY --from=build /build/usr/lib/libglib-2.0.so.0 /usr/lib/libglib-2.0.so.0
+COPY --from=build /build/usr/lib/libgmodule-2.0.so.0 /usr/lib/libgmodule-2.0.so.0
+COPY --from=build /build/usr/lib/libintl.so.8 /usr/lib/libintl.so.8
+COPY --from=build /build/usr/lib/libpcre2-8.so.0 /usr/lib/libpcre2-8.so.0
+COPY --from=build /build/var/run /var/run
 
 CMD ["/usr/bin/qemu-ga", "--method", "virtio-serial", "--path", "/dev/virtio-ports/org.qemu.guest_agent.0"]