Fix Heruko buildpacks samples that failed to determine the target OS #1511
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Changes
Add
CNB_TARGET_OS
andCNB_TARGET_ARCH
to fix error during the detect phase, where the target system cannot be detected:There seems to be a changed behavior that was introduced in the common buildpacks library that is in use that expects these environment variables to be present to detect the target system OS and architecture.
Ref: heroku/buildpacks-procfile#214
Ref: heroku/libcnb.rs@033f612
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