diff --git a/Dockerfile b/Dockerfile
index bae6f88..e5984b4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 # syntax=docker/dockerfile:1
-ARG GO_VERSION
+ARG GO_VERSION="1.23"
 FROM golang:${GO_VERSION}-alpine AS build
 ENV CGO_ENABLED="0"
 
diff --git a/README.md b/README.md
index ae56044..ac9b875 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # gocodespace
 
-An Alpine-based codespace for Go development
+An [Alpine](https://alpinelinux.org)-based codespace for Go development
 
 ## Features