Update golang Docker tag to v1.19

renovate[bot] · web-flow · commit c682d3315031 · 2022-11-20T13:07:07.000Z
diff --git a/Dockerfile b/Dockerfile
@@ -2,7 +2,7 @@
 ###############################
 # Build the doctree Go binary #
 ###############################
-FROM golang:1.18-alpine as builder
+FROM golang:1.19-alpine@sha256:d171aa333fb386089206252503bc6ab545072670e0286e3d1bbc644362825c6e as builder
 
 RUN apk add --no-cache git build-base
 COPY . /doctree
