Don't hard-code runtime application path #62
Merged
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It is not guaranteed that the app is installed to /app. Users of buildpacks other than Heroku require applications to be stored at other paths, such as pkgr which uses /opt/${APP_NAME}. Furthermore, the source may not be located at /app at compile time, since not every buildpack executor uses a layered filesystem, and so must resort to using a sandbox build directory (some call this the good old days).
This seems to have been broken by f651aac.
See crohr/pkgr#93 for the source of this.