diff --git a/.drone.yml b/.drone.yml
index fee4b70..9ae0d9d 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -7,6 +7,6 @@ steps:
   - name: backend
     image: golang:1.18-rc-bullseye
     commands:
-      - go build -o srg .
+      - GOAMD64=v2 go build -v -o srg .
 
 ...
diff --git a/Dockerfile b/Dockerfile
index 9aa81b2..318d037 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,9 +1,9 @@
-FROM golang:1.17-bullseye
+FROM golang:1.18-rc-bullseye
 
 COPY . /src
 
 WORKDIR /src
-RUN go build -o srg . && mv srg /usr/bin && rm -rf /src
+RUN GOAMD64=v2 go build -v -o srg . && mv srg /usr/bin && rm -rf /src
 WORKDIR /
 
 ENTRYPOINT ["/usr/bin/srg"]
\ No newline at end of file
diff --git a/SynchRoGazer.go b/SynchRoGazer.go
index e095f91..e8010a2 100644
--- a/SynchRoGazer.go
+++ b/SynchRoGazer.go
@@ -35,6 +35,15 @@ func HashFile(results chan<- HashFileResult, md5hasher *md5simd.Hasher, sha256ha
 		}
 		return
 	}
+
+	if fi.IsDir() {
+		results <- HashFileResult{
+			Error: fmt.Errorf("path %s is a directory", path),
+			Path:  path,
+		}
+		return
+	}
+
 	fh, err := os.Open(path)
 	if err != nil {
 		results <- HashFileResult{