Pin dependency golang to 9b2a279

renovate[bot] · web-flow · commit d1f313e942dc · 2022-08-01T16:14:55.000Z
diff --git a/Dockerfile b/Dockerfile
@@ -2,7 +2,7 @@
 ###############################
 # Build the doctree Go binary #
 ###############################
-FROM golang:1.18-alpine as builder
+FROM golang:1.18-alpine@sha256:9b2a2799435823dbf6fef077a8ff7ce83ad26b382ddabf22febfc333926400e4 as builder
 
 RUN apk add --no-cache git build-base
 COPY . /doctree
