# Does ./launcher rebuild keep all settings & posts?
**URL:** https://meta.discourse.org/t/does-launcher-rebuild-keep-all-settings-posts/35654
**Category:** Support
**Created:** [November 16, 2015, 4:13pm UTC](https://meta.discourse.org/t/does-launcher-rebuild-keep-all-settings-posts/35654 "2015-11-16T16:13:01Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@dylandamsma](https://meta.discourse.org/u/dylandamsma)
#### Post date: [November 16, 2015, 4:13pm UTC](https://meta.discourse.org/t/does-launcher-rebuild-keep-all-settings-posts/35654/1 "2015-11-16T16:13:01Z")
Hi there,
I’ve just upgraded the DO server on which my Discourse forum is hosted from a 1GB instance to a 2GB instance.
Then I changed the the app.yml file to use 3 unicorn\_workers instead of 2. (Anything else I should increase to speed up the forum?).
Now, I want to run: ./launcher rebuild app - However, I’m afraid it would change admin settings and or reset the entire discourse install? Would it?
It might be a dumb question, but I never worked with Docker.
Best,
Dylan
---
### Author:  [@zogstrip](https://meta.discourse.org/u/zogstrip)
#### Post date: [November 16, 2015, 4:24pm UTC](https://meta.discourse.org/t/does-launcher-rebuild-keep-all-settings-posts/35654/2 "2015-11-16T16:24:20Z")
> [@dylandamsma](#):
>
> Now, I want to run: ./launcher rebuild app - However, I’m afraid it would change admin settings and or reset the entire discourse install? Would it?
Since the database and all images/attachments are stored outside of the container, it’s **100% safe** to do a `./launcher rebuild app` 😉
---
### Author:  [@dylandamsma](https://meta.discourse.org/u/dylandamsma)
#### Post date: [November 16, 2015, 4:29pm UTC](https://meta.discourse.org/t/does-launcher-rebuild-keep-all-settings-posts/35654/3 "2015-11-16T16:29:28Z")
Hi @zogstrip, thanks for the quick reply. Running it now and praying none of the styling, settings or category changes get overwritten.
---
### Author:  [@dylandamsma](https://meta.discourse.org/u/dylandamsma)
#### Post date: [November 16, 2015, 4:38pm UTC](https://meta.discourse.org/t/does-launcher-rebuild-keep-all-settings-posts/35654/4 "2015-11-16T16:38:53Z")
Confirmed this worked. Thanks @zogstrip
---
### Author:  [@zogstrip](https://meta.discourse.org/u/zogstrip)
#### Post date: [November 16, 2015, 4:39pm UTC](https://meta.discourse.org/t/does-launcher-rebuild-keep-all-settings-posts/35654/5 "2015-11-16T16:39:41Z")