update Dockerfile go version to 1.21 (#50)

warrenguy · web-flow · commit 17b2dd6e5e40 · 2023-12-04T10:40:45.000+01:00
diff --git a/Dockerfile b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.20 as builder
+FROM golang:1.21 as builder
 WORKDIR /workspace
 
 COPY go.mod go.mod
