Build Pack Error when deploying dokku

[devjsaon]

Hello,

I'm over 2 days trying to figure out what can be happening on my environment
When trying to rebuild an existing aplication I'm getting the following error:
/tmp/buildpacks/heroku-buildpack-java/bin/compile: line 43: detect_java_version: command not

Below is the command I'm executing...

dokku rebuild:force myapp

Cloning into '/tmp/tmp.VjWEqvvaUa'...
done.
HEAD is now at 1924c62... Merge branch 'backlog#1234' into master_homolog
-----> Building myapp using buildstep...
-----> Installing ENV in build environment ...
-----> Using u1000 to run an application
-----> Java app detected
/tmp/buildpacks/heroku-buildpack-java/bin/compile: line 43: detect_java_version: command not found

Any help is more than welcome.

[jkutner]

@devjsaon it looks like you might be using an old version of the buildpack--there is no line 43 in the current version of the Java buildpack.

Can you confirm that you're running the latest code in the master branch of this repo?

[devjsaon]

hi @jkutner

thanks for you quick reply. :)

Yes I'm using old version of buildpack.
I added the following line to my procfile to force specific version of buildpack.

dokku config:set myapp BUILDPACK_URL=https://github.com/heroku/heroku-buildpack-java/releases/tag/v33

and then I've tried to deploy again and I see same error.

Command below...
$ git push
Enter passphrase...
Counting objects: 170, done.
Delta compression using up to 8 threads.
Compressing objects: 100% (92/92), done.
Writing objects: 100% (170/170), 20.01 KiB | 1.67 MiB/s, done.
Total 170 (delta 81), reused 133 (delta 57)
remote: Cloning into '/tmp/tmp.rSP1fxZgjk'...
remote: done.
remote: HEAD is now at d0a3138... procfile edited
remote: -----> Building myapp using buildstep...
remote: -----> Installing ENV in build environment ...
-----> Using u1000 to run an application
-----> Java app detected
remote: /tmp/buildpacks/heroku-buildpack-java/bin/compile: line 43: detect_java_version: command not found
To 127.0.0.1:myapp
! [remote rejected] master_desenv -> master (pre-receive hook declined)
error: failed to push some refs to 'dokku@127.0.0.1:myapp'

[jkutner]

Can you use a newer version of the buildpack? v33 is almost 5 years old now.

[devjsaon]

Yes I can, the point is how do I do that?
Before the problem, my procfile had only 1 line. - the one below
web: java -jar target/*.jar -Dserver.port=$PORT --spring.profiles.active=deploy
But since my deploys started to fail, I decided adding it in a try to resolve the problem.
I'm open to any suggestion or change.

[jkutner]

I think you update the buildpack by running:

$ dokku config:set myapp BUILDPACK_URL=https://github.com/heroku/heroku-buildpack-java/releases/tag/v66

(note the v66)

[devjsaon]

and the command will be inside my procfile, right?

[devjsaon]

After running the config set from my ubuntu machine I'm still getting error.
Full command below

$ git push docker-d master_desenv:master -f
Enter passphrase for key '/c/Users/.ssh/id_rsa':
Counting objects: 170, done.
Delta compression using up to 8 threads.
Compressing objects: 100% (86/86), done.
Writing objects: 100% (170/170), 20.02 KiB | 1.82 MiB/s, done.
Total 170 (delta 81), reused 146 (delta 63)
remote: Cloning into '/tmp/tmp.Oz7RqiUKC4'...
remote: done.
remote: HEAD is now at 88b86ab... Teste Julio
remote: -----> Building myapp using buildstep...
remote: -----> Installing ENV in build environment ...
-----> Using u1000 to run an application
-----> Fetching custom buildpack
To 127.0.0.1:myapp
! [remote rejected] master_desenv -> master (pre-receive hook declined)
error: failed to push some refs to 'dokku@127.0.0.1:myapp'

[devjsaon]

I was using the wrong URL for the buildpack.
Insted of usng the url in the command below
dokku config:set myapp BUILDPACK_URL=https://github.com/heroku/heroku-buildpack-java/releases/tag/v66

I changed for
dokku config:set myapp BUILDPACK_URL=https://github.com/heroku/heroku-buildpack-java.git

I'm now being able to deploy again. :)

Thank you @jkutner for following this with me. :)