From 8563a8bc743cc55f02198adc4a474ef695c9008e Mon Sep 17 00:00:00 2001
From: Brad Fitzpatrick <bradfitz@tailscale.com>
Date: Mon, 5 Jan 2026 08:15:22 -0800
Subject: [PATCH] go.mod, .github/workflows: bump Go version, add start of CI

Updates #27
---
 .github/workflows/ci.yml | 23 +++++++++++++++++++++++
 go.mod                   |  2 +-
 2 files changed, 24 insertions(+), 1 deletion(-)
 create mode 100644 .github/workflows/ci.yml

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..998a6db
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,23 @@
+name: Go CI
+
+on:
+  push:
+    branches:
+      - "main"
+  pull_request:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
+
+      - uses: actions/setup-go@d35c59abb061a4a6fb18e82ac0862c26744d6ab5 # v5.5.0
+        with:
+          go-version-file: go.mod
+
+      - name: build
+        run: go install
+
+      - name: test
+        run: go test ./...
diff --git a/go.mod b/go.mod
index ca77c29..aff550b 100644
--- a/go.mod
+++ b/go.mod
@@ -1,7 +1,7 @@
 module github.com/tailscale/mkctr
 
 // Use point versions of Go, see https://github.com/tailscale/tailscale/pull/13485
-go 1.23.1
+go 1.25.5
 
 require github.com/google/go-containerregistry v0.20.2