adding comments for hadolint ignore

Author: Maleware

superset/Dockerfile

@@ -38,6 +38,8 @@ RUN microdnf update \
     && microdnf clean all && \
     rm -rf /var/cache/yum
 
+# DL3042 gets ignored, since we use --no-chache-dir, hadolint can't interfere properly
+# SC2102 informs about [abba] = [ab], but we can igonre this for [sqlalchemy] https://www.shellcheck.net/wiki/SC2102
 # hadolint ignore=DL3042,SC2102
 RUN python3 -m venv /stackable/app \
     && source /stackable/app/bin/activate \