Add QNAP support to linux builder docker image

builders/build-linux-rust/Dockerfile

@@ -12,6 +12,9 @@ COPY --from=ghcr.io/nordsecurity/uniffi-generators:v0.25.0-8 /bin/uniffi-bindgen
 COPY --from=ghcr.io/nordsecurity/uniffi-generators:v0.25.0-8 /bin/uniffi-bindgen-go /bin
 COPY --from=ghcr.io/nordsecurity/uniffi-generators:v0.25.0-8 /bin/uniffi-bindgen-cpp /bin
 
+ENV QDK_TAG=v2.3.14
+ENV SCCACHE_TAG=0.4.2
+
 # Multilib is not present in an arm64 debian but is used by libtelio
 RUN set -eux; \
     export DEBIAN_FRONTEND=noninteractive; \
@@ -55,4 +58,24 @@ RUN rustup component add clippy rustfmt
 RUN cargo search --limit 1
 
 # Install `sccache`
-RUN cargo install sccache --version 0.4.2
+RUN cargo install sccache --version "${SCCACHE_TAG}"
+
+# Install QDK framework for QNAP packages (QPKG)
+RUN set -eux; \
+    export DEBIAN_FRONTEND=noninteractive; \
+    git clone https://github.com/qnap-dev/QDK.git --branch "${QDK_TAG}"; \
+    cd QDK; \
+    ./InstallToUbuntu.sh install
+
+# Cleanup
+RUN set -eux; \
+    export DEBIAN_FRONTEND=noninteractive; \
+	apt-get remove --purge -yq; \
+    apt-get autoclean -y; \
+    apt-get autoremove -y; \
+    rm -rf QDK; \
+    rm -rf /var/lib/{cache,log}/; \
+    rm -rf /var/lib/apt/lists/*; \
+    rm -rf /tmp/* /var/tmp/*; \
+    rm -rf /usr/share/doc/; \
+    rm -rf /usr/share/man/