Allows using rar other than in amd64

Documentation/Build/Dockerfile

@@ -79,9 +79,29 @@ RUN apt-get install -y libpng-dev
 RUN apt-get install -y libzip-dev
 RUN docker-php-ext-install gd zip
 RUN apt-get install -y libreoffice-common default-jre libreoffice-java-common poppler-utils
-RUN apt-get install -y clamav unoconv p7zip-full meshlab dia pandoc python3 zip unzip rar ffmpeg
+RUN apt-get install -y clamav unoconv p7zip-full meshlab dia pandoc python3 zip unzip ffmpeg
 RUN apt-get install -y xpdf mkisofs imagemagick meshlab tesseract-ocr tar
 
+## arm64 rar install hack (rar CLI only available for x86/x64 from rar labs)
+
+RUN DPKG_ARCH="$(dpkg --print-architecture)"; \
+    if [ "${DPKG_ARCH}" = "amd64" ]; then \
+        apt-get install -y rar \
+    else \
+        dpkg --add-architecture i386 && \
+        apt-get install qemu-user-static libc6-i386-cross libstdc++6-i386-cross wget -y && \
+        cp /usr/i686-linux-gnu/lib/libm.so.6 /lib && \
+        cp /usr/i686-linux-gnu/lib/libc.so.6 /lib && \
+        cp /usr/i686-linux-gnu/lib/libpthread.so.0 /lib && \
+        cp /usr/i686-linux-gnu/lib/ld-linux.so.2 /lib && \
+        cp /usr/i686-linux-gnu/lib/libstdc++.so.6 /lib && \
+        cp /usr/i686-linux-gnu/lib/libgcc_s.so.1  /lib && \
+        wget https://www.rarlab.com/rar/rarlinux-x32-700b3.tar.gz  -O /tmp/rarlinux-x32-700b3.tar.gz && \
+        tar -zxvf /tmp/rarlinux-x32-700b3.tar.gz -C /tmp && \
+        cp HRConvert2/Documentation/Build/rar-arm64 /tmp/rar-arm64 && \
+        chmod +x /tmp/rar-arm64 &&  ln -s /tmp/rar-arm64 /usr/bin/rar; \
+    fi
+
 # Copy required files.
 RUN cp HRConvert2/Documentation/Build/php.ini /usr/local/etc/php.ini
 RUN cp HRConvert2/index.html /var/www/html/index.html

Documentation/Build/rar-arm64

@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+
+qemu-i386-static /tmp/rar/rar $*