From 91df729f1cfd636355fc8338f47aefa4ab8b3b84 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Julian=20T=C3=B6lle?= <julian.toelle97@gmail.com>
Date: Sun, 4 May 2025 02:23:20 +0200
Subject: [PATCH] feat: publish container image (#82)

Use `goreleaser` and `ko` to automatically build and publish container
images in the release workflow. The images are published to
`ghcr.io/apricote/hcloud-upload-image`.

Co-authored-by: Ilja Malachowski <malahovskiy.in@gmail.com>
---
 .github/workflows/release.yaml | 11 +++++++++++
 .goreleaser.yaml               | 23 +++++++++++++++++++----
 README.md                      |  8 ++++++++
 3 files changed, 38 insertions(+), 4 deletions(-)

diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index d842a96..568ad36 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -7,11 +7,22 @@ on:
 
 jobs:
   release:
+    permissions:
+      contents: read
+      packages: write
+
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
         uses: actions/checkout@v4
 
+      - name: Log in to the Container registry
+        uses: docker/login-action@65b78e6e13532edd9afa3aa52ac7964289d1a9c1
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
       - name: Set up Go
         uses: actions/setup-go@v5
         with:
diff --git a/.goreleaser.yaml b/.goreleaser.yaml
index 5bba2d1..474362f 100644
--- a/.goreleaser.yaml
+++ b/.goreleaser.yaml
@@ -7,7 +7,8 @@ before:
     - ./scripts/completions.sh
 
 builds:
-  - env:
+  - id: default
+    env:
       - CGO_ENABLED=0
     goos:
       - linux
@@ -21,7 +22,7 @@ builds:
       - -X {{ .ModulePath }}/internal/version.versionPrerelease=
 
 archives:
-  - format: tar.gz
+  - formats: [ "tar.gz" ]
     # this name template makes the OS and Arch compatible with the results of `uname`.
     name_template: >-
       {{ .ProjectName }}_
@@ -33,7 +34,7 @@ archives:
     # use zip for windows archives
     format_overrides:
       - goos: windows
-        format: zip
+        formats: [ "zip" ]
 
     files:
       - README.md
@@ -104,9 +105,23 @@ aurs:
       install -Dm644 "./completions/hcloud-upload-image.zsh" "${pkgdir}/usr/share/zsh/site-functions/_hcloud-upload-image"
       install -Dm644 "./completions/hcloud-upload-image.fish" "${pkgdir}/usr/share/fish/vendor_completions.d/hcloud-upload-image.fish"
 
+kos:
+  - id: container-images
+    build: default
+    repositories:
+      - ghcr.io/apricote
+    platforms:
+      - linux/amd64
+      - linux/arm64
+    base_import_paths: true
+    labels:
+      org.opencontainers.image.source: https://github.com/apricote/hcloud-upload-image
+    tags:
+      - latest
+      - "{{.Tag}}"
 
 snapshot:
-  name_template: "{{ .Version }}-dev+{{ .ShortCommit }}"
+  version_template: "{{ .Version }}-dev+{{ .ShortCommit }}"
 
 changelog:
   # Generated by release-please
diff --git a/README.md b/README.md
index 4383aa0..ae42c59 100644
--- a/README.md
+++ b/README.md
@@ -62,6 +62,14 @@ If you already have a recent Go toolchain installed, you can build & install the
 go install github.com/apricote/hcloud-upload-image@latest
 ```
 
+#### Docker
+
+There is a docker image published at `ghcr.io/apricote/hcloud-upload-image`.
+
+```shell
+docker run --rm -e HCLOUD_TOKEN="<your token>" ghcr.io/apricote/hcloud-upload-image:latest <command>
+```
+
 #### Usage
 
 ```shell