Remove CNB_TARGET_* env vars workaround (#260)

These were added recently in #251 to work around this upstream `lifecycle` bug: buildpacks/lifecycle#1308 The fix for that has since been released in lifecycle 0.19.0: https://github.com/buildpacks/lifecycle/releases/tag/v0.19.0 Which our builder images are now using: heroku/cnb-builder-images#475 As such, we no longer need the workaround here (and in fact, setting these env vars now cannot have an effect, since `lifecycle` now ignores them). GUS-W-15225541.
heroku · Mar 11, 2024 · 150553d · 150553d
1 parent c1ad0de
commit 150553d
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diff --git a/heroku-20-cnb-build/Dockerfile b/heroku-20-cnb-build/Dockerfile
@@ -10,8 +10,6 @@ RUN mkdir /app && \
 ENV CNB_USER_ID=1000
 ENV CNB_GROUP_ID=1000
 ENV CNB_STACK_ID "heroku-20"
-ENV CNB_TARGET_OS="linux"
-ENV CNB_TARGET_ARCH="amd64"
 
 LABEL io.buildpacks.stack.id="heroku-20"
 

diff --git a/heroku-22-cnb-build/Dockerfile b/heroku-22-cnb-build/Dockerfile
@@ -10,8 +10,6 @@ RUN mkdir /app && \
 ENV CNB_USER_ID=1000
 ENV CNB_GROUP_ID=1000
 ENV CNB_STACK_ID "heroku-22"
-ENV CNB_TARGET_OS="linux"
-ENV CNB_TARGET_ARCH="amd64"
 
 LABEL io.buildpacks.stack.id="heroku-22"
 

diff --git a/heroku-24-build/Dockerfile b/heroku-24-build/Dockerfile
@@ -8,5 +8,3 @@ USER 1002
 ENV CNB_USER_ID=1002
 ENV CNB_GROUP_ID=1000
 ENV CNB_STACK_ID "heroku-24"
-ENV CNB_TARGET_OS=$TARGETOS
-ENV CNB_TARGET_ARCH=$TARGETARCH