Add qalculate to docker build

Signed-off-by: trivernis <trivernis@protonmail.com>

Dockerfile

@@ -15,9 +15,18 @@ RUN --mount=type=cache,target=/usr/local/cargo/registry \
 RUN mkdir /tmp/tobi
 RUN --mount=type=cache,target=target cp target/release/tobi-rs /tmp/tobi/
 
+FROM bitnami/minideb:latest AS qalculate-builder
+RUN mkdir /tmp/qalculate
+WORKDIR /tmp/qalculate
+RUN install_packages ca-certificates wget xz-utils
+RUN wget https://github.com/Qalculate/qalculate-gtk/releases/download/v3.18.0/qalculate-3.18.0-x86_64.tar.xz -O qalculate.tar.xz
+RUN tar xf qalculate.tar.xz
+RUN cp qalculate-3.18.0/* /tmp/qalculate
+
 FROM bitnami/minideb:latest
 RUN install_packages openssl libopus0 ffmpeg python3 python3-pip libpq5
+COPY --from=qalculate-builder /tmp/qalculate/* /usr/bin/
+COPY --from=builder /tmp/tobi/tobi-rs .
 RUN pip3 install youtube-dl
 RUN rm -rf /var/lib/{apt,dpkg,cache,log}/
-COPY --from=builder /tmp/tobi/tobi-rs .
 ENTRYPOINT ["/tobi-rs"]