docker updates

docker/archlinux/Dockerfile

@@ -3,13 +3,18 @@ FROM archlinux:base
 ENV LANG=C.UTF-8
 RUN pacman -Syu --noconfirm
 RUN pacman-db-upgrade
-# qt5-base skipped
+
 # bluez skipped, can't be installed in docker
 RUN pacman -S --noconfirm sudo git base-devel cmake libusb readline bzip2 lz4 gd arm-none-eabi-gcc arm-none-eabi-newlib --needed
 
 # OpenCL for hitag2crack
 RUN pacman -S --noconfirm ocl-icd
 
+ARG SKIPQT=false
+RUN if [ "${SKIPQT}" = "false" ]; then \
+      pacman -S --noconfirm qt6-base; \
+    fi
+
 # Create rrg user
 RUN useradd -ms /bin/bash rrg
 RUN passwd -d rrg