Hello everyone. I just changed my SMTP settings in app.yml.
I wanted to rebuild app, but i cant. it looks like this:
Anybody knows the problem?
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i too am getting the similar issue when trying to rebuild a container.
Edit:
Started my old container using
./launcher start app. But still cant rebuild a container as of now.
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./launcher destroy app
then ./launcher rebuild app
doesn’t work either 
I’ve just got this problem and my site is down! (I know I know I should really have a staging site to test such things first).
just type ./launcher start app
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Worked for me now its on!
go to yourwebsite.com/admin/docker
theres an update for discourse. maybe this will solve this error.
i am checking this now
I am facing exactly the same problem, for a server migration.
I need to change e-mail settings (Mandrill -> SparkPost), but change is not taken into account.
Edit: and I am already up-to-date:
Looks like my fault. I’m going to see if it’s what I think it is and submit a PR in a few minutes.
If I’m right, edit launcher and remove the exit statement just after “echo done JP”
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deleted exit after that echo.
works like charm <3
With your fix it’s all good for me. Even e-mail settings.
Thanks 
Sorry, folks. I left in some code I was using to facilitate debugging my changes. Thanks @jakubmierzejewski. Hopefully this will get pulled in soon and others won’t get bitten. I’ll put some procedures in place to see that I don’t do this again!
Sorry @mrdiscourse and @Alankrit_Choudh & @twicedd
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