Add arm64 packaging for Debuntu

deployment/debian-package-arm64/Dockerfile.amd64

@@ -0,0 +1,43 @@
+FROM debian:9
+# Docker build arguments
+ARG SOURCE_DIR=/jellyfin
+ARG PLATFORM_DIR=/jellyfin/deployment/debian-package-arm64
+ARG ARTIFACT_DIR=/dist
+ARG SDK_VERSION=2.2
+# Docker run environment
+ENV SOURCE_DIR=/jellyfin
+ENV ARTIFACT_DIR=/dist
+ENV DEB_BUILD_OPTIONS=noddebs
+ENV ARCH=amd64
+
+# Prepare Debian build environment
+RUN apt-get update \
+ && apt-get install -y apt-transport-https debhelper gnupg wget devscripts mmv 
+
+# Install dotnet repository
+# https://dotnet.microsoft.com/download/linux-package-manager/debian9/sdk-current
+RUN wget https://download.visualstudio.microsoft.com/download/pr/69937b49-a877-4ced-81e6-286620b390ab/8ab938cf6f5e83b2221630354160ef21/dotnet-sdk-2.2.104-linux-x64.tar.gz -O dotnet-sdk.tar.gz \
+ && mkdir -p dotnet-sdk \
+ && tar -xzf dotnet-sdk.tar.gz -C dotnet-sdk \
+ && ln -s $( pwd )/dotnet-sdk/dotnet /usr/bin/dotnet
+
+# Prepare the cross-toolchain
+RUN dpkg --add-architecture arm64 \
+ && apt-get update \
+ && apt-get install -y cross-gcc-dev \
+ && TARGET_LIST="arm64" cross-gcc-gensource 6 \
+ && cd cross-gcc-packages-amd64/cross-gcc-6-arm64 \
+ && apt-get install -y gcc-6-source libstdc++6-arm64-cross binutils-aarch64-linux-gnu bison flex libtool gdb sharutils netbase libcloog-isl-dev libmpc-dev libmpfr-dev libgmp-dev systemtap-sdt-dev autogen expect chrpath zlib1g-dev zip libc6-dev:arm64 linux-libc-dev:arm64 libgcc1:arm64 libcurl4-openssl-dev:arm64 libfontconfig1-dev:arm64 libfreetype6-dev:arm64 liblttng-ust0:arm64 libstdc++6:arm64
+
+# Link to docker-build script
+RUN ln -sf ${PLATFORM_DIR}/docker-build.sh /docker-build.sh
+
+# Link to Debian source dir; mkdir needed or it fails, can't force dest
+RUN mkdir -p ${SOURCE_DIR} && ln -sf ${PLATFORM_DIR}/pkg-src ${SOURCE_DIR}/debian
+
+VOLUME ${ARTIFACT_DIR}/
+
+COPY . ${SOURCE_DIR}/
+
+ENTRYPOINT ["/docker-build.sh"]
+#ENTRYPOINT ["/bin/bash"]