add missing env vars to buildpack task in concourse

Author: robwhitby

.e2e/buildpack/concourse.expected.yml

@@ -48,9 +48,11 @@ jobs:
           --env ARTIFACTORY_PASSWORD \
           --env ARTIFACTORY_URL \
           --env ARTIFACTORY_USERNAME \
+          --env BUILD_VERSION \
           --env CI \
           --env EAID \
           --env EE_PLATFORM_TEAM \
+          --env GIT_REVISION \
           --env RUNNING_IN_CI \
           --publish \
           --trust-builder
@@ -64,9 +66,11 @@ jobs:
           --env ARTIFACTORY_PASSWORD \
           --env ARTIFACTORY_URL \
           --env ARTIFACTORY_USERNAME \
+          --env BUILD_VERSION \
           --env CI \
           --env EAID \
           --env EE_PLATFORM_TEAM \
+          --env GIT_REVISION \
           --env RUNNING_IN_CI \
           --publish \
           --trust-builder
@@ -131,9 +135,11 @@ jobs:
           --env ARTIFACTORY_USERNAME \
           --env BP_BAR \
           --env BP_FOO \
+          --env BUILD_VERSION \
           --env CI \
           --env EAID \
           --env EE_PLATFORM_TEAM \
+          --env GIT_REVISION \
           --env RUNNING_IN_CI \
           --publish \
           --trust-builder
@@ -150,9 +156,11 @@ jobs:
           --env ARTIFACTORY_USERNAME \
           --env BP_BAR \
           --env BP_FOO \
+          --env BUILD_VERSION \
           --env CI \
           --env EAID \
           --env EE_PLATFORM_TEAM \
+          --env GIT_REVISION \
           --env RUNNING_IN_CI \
           --publish \
           --trust-builder

renderers/concourse/buildpack.go

@@ -90,8 +90,11 @@ func packScriptArgs(task manifest.Buildpack, man manifest.Manifest, basePath str
 		appPath = task.Path
 	}
 
+	envKeys := slices.AppendSeq([]string{"BUILD_VERSION", "GIT_REVISION"}, maps.Keys(task.Vars))
+	slices.Sort(envKeys)
+
 	var envVars strings.Builder
-	for _, key := range slices.Sorted(maps.Keys(task.Vars)) {
+	for _, key := range envKeys {
 		envVars.WriteString(fmt.Sprintf(`--env %s \
 `, key))
 	}