utils/docker-run: also mount current working directory

Currently, using utils/docker-run expects that the current working
directory is the working copy. This means that it is not possible
to use docker-run with an out-of-tree build (one using O=).

Add the current working directory to the list of mountpoints, and
use that as working directory in the container.

Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

utils/docker-run

@@ -17,10 +17,13 @@ declare -a docker_opts=(
     -i
     --rm
     --user "$(id -u):$(id -g)"
-    --workdir "${MAIN_DIR}"
+    --workdir "$(pwd)"
 )
 
-declare -a mountpoints=( "${MAIN_DIR}" )
+declare -a mountpoints=(
+    "${MAIN_DIR}"
+    "$(pwd)"
+)
 
 # Empty GIT_DIR means that we are not in a workdir, *and* git is too old
 # to know about worktrees, so we're not in a worktree either. So it means