Merge pull request #264 from compscidr/renovate/golang-1.x

Update golang Docker tag to v1.21.4

Author: compscidr

Dockerfile

@@ -1,6 +1,6 @@
 # Start from a Debian image with the latest version of Go installed
 # and a workspace (GOPATH) configured at /go.
-FROM golang:1.21.3
+FROM golang:1.21.4
 
 # Copy the local package files to the container's workspace.
 ADD . /go/src/github.com/compscidr/goblog/