From 6c6a8efdeb9467d6ae06ce0afb10eaa8638a992c Mon Sep 17 00:00:00 2001
From: "renovate[bot]" <29139614+renovate[bot]@users.noreply.github.com>
Date: Thu, 5 Oct 2023 19:28:10 +0000
Subject: [PATCH] Update golang Docker tag

---
 .tool-versions | 2 +-
 Dockerfile     | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/.tool-versions b/.tool-versions
index 4933a41..ff2d562 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1 +1 @@
-golang 1.18
+golang 1.21.2
diff --git a/Dockerfile b/Dockerfile
index 791a922..773c4c5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,7 @@
 ###############################
 # Build the doctree Go binary #
 ###############################
-FROM golang:1.18-alpine as builder
+FROM golang:1.21-alpine@sha256:1c9cc949513477766da12bfa80541c4f24957323b0ee00630a6ff4ccf334b75b as builder
 
 RUN apk add --no-cache git build-base
 COPY . /doctree