build: Use same version number for ARM64 build (#874)

Dockerfile

@@ -1,7 +1,6 @@
 FROM scratch AS build-amd64
 COPY --from=qemux/qemu-docker:6.06 / /
 
-ARG VERSION_ARG="0.0"
 ARG DEBCONF_NOWARNINGS="yes"
 ARG DEBIAN_FRONTEND="noninteractive"
 ARG DEBCONF_NONINTERACTIVE_SEEN="true"
@@ -22,7 +21,6 @@ RUN set -eu && \
         libxml2-utils \
         libarchive-tools && \
     apt-get clean && \
-    echo "$VERSION_ARG" > /run/version && \
     rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
 COPY --chmod=755 ./src /run/
@@ -32,12 +30,11 @@ ADD --chmod=755 https://raw.githubusercontent.com/christgau/wsdd/v0.8/src/wsdd.p
 ADD --chmod=664 https://github.com/qemus/virtiso-whql/releases/download/v1.9.43-0/virtio-win-1.9.43.tar.xz /drivers.txz
 
 FROM dockurr/windows-arm:2.22 AS build-arm64
+FROM build-${TARGETARCH}
 
 ARG VERSION_ARG="0.0"
 RUN echo "$VERSION_ARG" > /run/version
 
-FROM build-${TARGETARCH}
-
 EXPOSE 8006 3389
 VOLUME /storage