Finds an ordered group of buildpacks to use during the build phase.

Exit Codes

Exit Code Result
0 Success
11 Platform API incompatibility error
12 Buildpack API incompatibility error
1-10, 13-19 Generic lifecycle errors
20 All buildpacks groups have failed to detect w/o error
21 All buildpack groups have failed to detect and at least one buildpack has errored
22-29 Detection-specific lifecycle errors