A user, corot2a, is seeking clarification on whether running ./launcher destroy app && ./launcher start app will remove the built Docker image or just the container. NateDhaliwal shares a quote from Discourse suggesting that for SMTP settings changes, a full rebuild is not necessary. featheredtoast confirms that the commands will only remove and recreate the container, leaving the existing image intact.
To answer directly, yes, it’s this one - your built image is unaffected. The command is equivalent to a docker stop && docker rm, and it does not affect docker images at all.