diff --git a/Dockerfile b/Dockerfile
index 8867155..e4b7870 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -15,10 +15,10 @@ RUN mkdir -p /tmp/tools/ && \
 
 ARG mirrorbits_version=v0.5.1
 ARG mirrorbits_current_commit=9189dc7
-RUN mkdir -p /tmp/tools/ && \
-  git clone https://github.com/etix/mirrorbits /tmp/tools/mirrorbits && \
+# hadolint ignore=DL3003
+RUN git clone https://github.com/etix/mirrorbits /tmp/tools/mirrorbits && \
   cd /tmp/tools/mirrorbits && \
-  git checkout ${mirrorbits_current_commit} && \
+  git checkout "${mirrorbits_current_commit}" && \
   /tmp/tools/go/bin/go build
 
 ARG tini_version=v0.19.0