diff --git a/src/check b/src/check
index 64d13c3..9f95f56 100755
--- a/src/check
+++ b/src/check
@@ -2,6 +2,7 @@
 
 set -eu
 
+[ -e /opt/resource/common ] && cd /opt/resource
 . ./common
 
 jq -r tostring << EOF
diff --git a/src/in b/src/in
index 4b91c11..776e437 100755
--- a/src/in
+++ b/src/in
@@ -2,6 +2,7 @@
 
 set -eu
 
+[ -e /opt/resource/common ] && cd /opt/resource
 . ./common
 
 oci_dir="$(mktemp -d)"
diff --git a/src/out b/src/out
index 0c2b773..77851dd 100755
--- a/src/out
+++ b/src/out
@@ -2,6 +2,7 @@
 
 set -eu
 
+[ -e /opt/resource/common ] && cd /opt/resource
 . ./common
 
 IMAGE_REFS_FILE="$(mktemp -t)"