Force golangci-lint cache directory for running as action.

entrypoint.sh

@@ -11,6 +11,9 @@ export GOCACHE=/home/container/go/build
 export GOMODCACHE=/home/container/go/pkg/mod
 export GOPATH=/home/container/go
 
+# ...and golangci-lint also!
+export GOLANGCI_LINT_CACHE=/home/container/golangci-lint
+
 if [ "${CMD}" == "" ]; then
     CMD="${INPUT_COMMAND}"
 fi