Update golang Docker tag to v1.21

renovate[bot] · web-flow · commit aa46dc139c68 · 2023-12-11T01:27:00.000Z
diff --git a/Dockerfile b/Dockerfile
@@ -1,5 +1,5 @@
 # Build the manager binary
-FROM golang:1.20 as builder
+FROM golang:1.21@sha256:ae34fbf671566a533f92e5469f3f3d34e9e6fb14c826db09956454da9a84c9a9 as builder
 
 WORKDIR /workspace
 # Copy the Go Modules manifests
