Merge branch 'docker_add_unzip' into 'master'

Dockerfile: install unzip

See merge request Librem5/image-builder!95

docker/Dockerfile

@@ -12,7 +12,7 @@ RUN apt-get install -y console-setup
 RUN setupcon -v 
 
 # Install 
-RUN apt-get install -y keyboard-configuration vmdebootstrap git sudo kpartx shellcheck
+RUN apt-get install -y keyboard-configuration vmdebootstrap git sudo kpartx shellcheck unzip
 RUN apt-get install -y u-boot-tools make gcc gcc-arm-linux-gnueabihf gcc-aarch64-linux-gnu vim
 RUN apt-get install -y gcc-arm-none-eabi libstdc++-arm-none-eabi-newlib libnewlib-arm-none-eabi