Use the import path provided via the action input to download package

Author: andrewslotin

entrypoint.sh

@@ -3,9 +3,13 @@
 readonly TAG=${GITHUB_REF#refs/tags/*}
 readonly VERSION=${TAG##*/}
 
-PACKAGE=github.com/${GITHUB_REPOSITORY}
+PACKAGE=${INPUT_IMPORT_PATH:=github.com/${GITHUB_REPOSITORY}}
+
+# submodules version tags are formatted as <submodule>/vX.Y.Z,
+# so we extract the submodule name and append it to the main module
+# import path
 if [[ "$VERSION" != "$TAG" ]]; then
-  PACKAGE=github.com/${GITHUB_REPOSITORY}/${TAG%"/$VERSION"}
+  PACKAGE=${PACKAGE}/${TAG%"/$VERSION"}
 fi
 
 # if version > 1, then add the version scope