diff --git a/Dockerfile b/Dockerfile
index 6ac669ed9..436602be5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -14,7 +14,6 @@ LABEL name=ddns-go
 LABEL url=https://github.com/jeessy2/ddns-go
 
 WORKDIR /app
-RUN apk add --no-cache bash
 COPY --from=builder /usr/share/zoneinfo /usr/share/zoneinfo
 ENV TZ=Asia/Shanghai
 COPY --from=builder /app/ddns-go /app/ddns-go
diff --git a/config/config.go b/config/config.go
index 6a327b132..cd2caf8bf 100755
--- a/config/config.go
+++ b/config/config.go
@@ -231,7 +231,7 @@ func (conf *DnsConfig) getAddrFromCmd(addrType string) string {
 		if err != nil {
 			execCmd = exec.Command("sh", "-c", cmd)
 		} else {
-			execCmd = exec.Command("bash", "-rc", cmd)
+			execCmd = exec.Command("bash", "-c", cmd)
 		}
 	}
 	// run cmd