when ever i try to ./launcher rebuild app it gives an error. root@amsaal:~# cd /var/discourse/ root@amsaal:/var/discourse# ./launcher rebuild app x86_64 arch detected. fatal: No such ref: HEAD fatal: No such ref: HEAD Stopping old container /usr/bin/docker stop -t 600 app app 2.0.20241203-0251: Pulling from discourse/base Digest: sha256:d5d4e6d361d56745e37f2609db58a6970cc9b3fcd26d0b2dcba23d0cb581f067 Status: Image is up to date for discourse/base:2.0.20241203-0251 docker.io/discourse/base:2.0.20241203-0251 /usr/local/lib/ruby/gems/3.3.0/gems/pups-1.2.1/lib/pups.rb /usr/local/bin/pups --stdin docker: invalid reference format: repository name (library/#<NoMethodError) must be lowercase. See ‘docker run --help’. cat: cids/app_bootstrap.cid: No such file or directory bootstrap failed with exit code 125 ** FAILED TO BOOTSTRAP ** please scroll up and look for earlier error messages, there may be more than one. ./discourse-doctor may help diagnose the problem. Container name cannot be empty root@amsaal:/var/discourse#

Did you check status of the launcher repo? git status

root@amsaal:/var/discourse# git status No commits yet Untracked files: (use “git add …” to include in what will be committed) .github/ .gitignore LICENSE README.md discourse-doctor discourse-setup image/ launcher rebuild.log samples/ scripts/ templates/ tests/ nothing added to commit but untracked files present (use “git add” to track) root@amsaal:/var/discourse#

You should have seen something like this: # git status On branch main Your branch is up to date with 'origin/main'. nothing to commit, working tree clean so I think somehow your /var/discourse directory is broken - is no longer connected to the repo. Did you somehow tidy up, lose, or rename the .git subfolder?

i did not touch anything actually? how can i fix it?

Sorry, I don’t know. Do you have a .git subdirectory? What is in it? In my case, the config file looks like this: # cat .git/config [core] repositoryformatversion = 0 filemode = true bare = false logallrefupdates = true [remote "origin"] url = https://github.com/discourse/discourse_docker.git fetch = +refs/heads/*:refs/remotes/origin/* [branch "main"] remote = origin merge = refs/heads/main But this is for reference. I don’t think the fix is to edit a config file!

i have same result root@amsaal:/var/discourse# cat .git/config [core] repositoryformatversion = 0 filemode = true bare = false logallrefupdates = true [remote “origin”] url = GitHub - discourse/discourse_docker: A Docker image for Discourse · GitHub fetch = +refs/heads/:refs/remotes/origin/ [branch “main”] remote = origin merge = refs/heads/main And git status root@amsaal:/var/discourse# git status On branch main Your branch is based on ‘origin/main’, but the upstream is gone. (use “git branch --unset-upstream” to fixup) Changes not staged for commit: (use “git add …” to update what will be committed) (use “git restore …” to discard changes in working directory) modified: .github/workflows/build.yml modified: LICENSE modified: README.md modified: templates/postgres.13.template.yml modified: templates/postgres.15.template.yml modified: templates/postgres.template.yml modified: templates/web.ssl.template.yml modified: templates/web.template.yml Untracked files: (use “git add …” to include in what will be committed) rebuild.log no changes added to commit (use “git add” and/or “git commit -a”)

so can reinstall discourse can solve it and can you advice how can i do it from SSH?

For a full reinstall, you need your full backup (including your app.yml file) and a fresh OS on your instance. The instructions are here: INSTALL-cloud It might be best to try the install on a new instance. You’ll need to add the new IP address to a temporary subdomain in your DNS. Or, if you are happy with the downtime, just update your DNS to the new IP address. You do need to have some idea what you’re doing, otherwise you need help. Sorry, I can’t be that help.

Unable to rebuild discourse

Product Support

Ed_S (Ed S) December 24, 2024, 4:10pm 8

Looks like you must have changed something - your latest git status gives you very different results from your previous report. This is mysterious!

Topic		Replies	Views
Rebuild App - Error Self-hosting	7	1131	December 21, 2020
Rebuild fails with git reset --hard origin tests-passed failed with return Product Support	4	1757	December 11, 2020
Rebuild app fails (Docker and cat) Self-hosting	7	877	August 6, 2021
Launcher fails rebuild and leaves container not running Product Support	3	934	May 12, 2020
Error `rebuild app` broken, at the last discourse upgrade Product Support	9	468	May 7, 2025

Unable to rebuild discourse

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