dabuild: unabstractify `docker` invocation

Signed-off-by: Richard Mortier <mort@cantab.net>

dabuild.in

@@ -87,7 +87,10 @@ if [ "$DABUILD_CACHE" = "true" ]; then
 fi
 
 ## go!
-ABUILD_WORKDIR=/home/builder/aports/${PWD#*/aports/}
-DOCKER="docker run -ti $ABUILD_VOLUMES -e DABUILD_DEBUG $DABUILD_ARGS"
-$DOCKER --workdir $ABUILD_WORKDIR \
-	%%ABUILD_IMAGE%%:$ABUILD_VERSION-$DABUILD_ARCH "$@"
+docker run --tty --interactive \
+       $ABUILD_RM \
+       $ABUILD_VOLUMES \
+       -e DABUILD_DEBUG \
+       $DABUILD_ARGS \
+       --workdir /home/builder/aports/${PWD#*/aports/} \
+       %%ABUILD_IMAGE%%:$ABUILD_VERSION-$DABUILD_ARCH "$@"