fix(entrypoint): change dart-sass cli options

- oneshot: remove --update, re-compile of all files
- watch: remove --stop-on-error
  - allow continuation after errors instead of container exit
  - display errors and allow for realtime correction

entrypoint.sh

@@ -7,11 +7,11 @@
 if [ "$1" = "shell" ]; then
     exec /bin/bash
 elif [ "$1" = "oneshot" ]; then
-    exec /opt/dart-sass/sass -s "$SASS_STYLE" --update --stop-on-error /sass:/css
+    exec /opt/dart-sass/sass -s "$SASS_STYLE" --stop-on-error --embed-sources /sass:/css
 elif [ -n "$1" ]; then
     exec "$@"
 else
-    exec /opt/dart-sass/sass -s "$SASS_STYLE" --watch --poll /sass:/css
+    exec /opt/dart-sass/sass -s "$SASS_STYLE" --watch --poll --embed-sources /sass:/css
 fi
 
 exit $?