use HOME env var
diff --git a/tools/run_tests/run_interop_tests.py b/tools/run_tests/run_interop_tests.py
index b8a6637..76be932 100755
--- a/tools/run_tests/run_interop_tests.py
+++ b/tools/run_tests/run_interop_tests.py
@@ -535,10 +535,10 @@
env['TTY_FLAG'] = '-t'
# This env variable is used to get around the github rate limit
# error when running the PHP `composer install` command
- # TODO(stanleycheung): find a more elegant way to do this
- if language.safename == 'php' and os.path.exists('/home/jenkins/.composer/auth.json'):
+ host_file = '%s/.composer/auth.json' % os.environ['HOME']
+ if language.safename == 'php' and os.path.exists(host_file):
env['BUILD_INTEROP_DOCKER_EXTRA_ARGS'] = \
- '-v /home/jenkins/.composer/auth.json:/root/.composer/auth.json:ro'
+ '-v %s:/root/.composer/auth.json:ro' % host_file
build_job = jobset.JobSpec(
cmdline=['tools/jenkins/build_interop_image.sh'],
environ=env,