add commit footer for docker

.env.example

@@ -14,7 +14,6 @@ EMAIL_USE_TLS=True
 EMAIL_BACKEND="django.core.mail.backends.smtp.EmailBackend"
 EMAIL_FILE_PATH="/tmp/app-messages"
 ENABLE_EMAIL=false
-COMMIT=$(git log --format="%H %ad" --date=iso -n 1)
 PREDEFINED_TOKEN='5018dd65-9abd-4a62-8896-80f34ac66150'
 # TODO review these vars
 #SNAPSHOTS_DIR=/path/to/TODO

docker/devicehub-django.entrypoint.sh

@@ -12,6 +12,10 @@ check_app_is_there() {
 }
 
 deploy() {
+        # TODO this is weird, find better workaround
+        git config --global --add safe.directory /opt/devicehub-django
+        export COMMIT=$(git log --format="%H %ad" --date=iso -n 1)
+
         if [ "${DEBUG:-}" = 'true' ]; then
                 ./manage.py print_settings
         fi