From 936893e6c65ea30471b8f74a8ecb51e9fb09e00c Mon Sep 17 00:00:00 2001
From: Jason Volk <jason@zemos.net>
Date: Fri, 6 Jun 2025 01:44:16 +0000
Subject: [PATCH] Conditions for special tags published to container
 registries.

Signed-off-by: Jason Volk <jason@zemos.net>
---
 .github/workflows/publish.yml |  4 +++-
 docker/bake.hcl               | 14 ++++++++++----
 2 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 06a450ea..fe36dc40 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -65,7 +65,7 @@ jobs:
       !failure() && !cancelled()
       && inputs.machines
       && inputs.docker_repo != ''
-      && github.ref == 'refs/heads/main'
+      && (github.ref == 'refs/heads/main' || contains(github.ref, 'refs/tags/'))
 
     name: Containers
     runs-on: ${{matrix.machine}}
@@ -115,6 +115,8 @@ jobs:
           acct: ${{github.actor}}
           repo: ${{github.repository}}
           docker_repo: ${{inputs.docker_repo}}
+          docker_tag_latest: ${{ contains(github.ref, 'refs/tags/') && !contains(github.ref, '-rc') }}
+          docker_tag_preview: ${{ contains(github.ref, 'refs/tags/') && contains(github.ref, '-rc') }}
 
         run: |
           docker/bake.sh "${{matrix.bake_target}}"
diff --git a/docker/bake.hcl b/docker/bake.hcl
index 9a764a02..e1634c94 100644
--- a/docker/bake.hcl
+++ b/docker/bake.hcl
@@ -16,6 +16,12 @@ variable "repo" {
 variable "docker_repo" {
     default = "${repo}"
 }
+variable "docker_tag_preview" {
+	default = false
+}
+variable "docker_tag_latest" {
+	default = false
+}
 
 variable "git_ref" {
     default = "${GITHUB_REF}"
@@ -261,8 +267,8 @@ target "github" {
     name = elem("github", [cargo_profile, rust_toolchain, rust_target, feat_set, sys_name, sys_version, sys_target])
     tags = [
         "ghcr.io/${repo}:${git_ref_name}-${cargo_profile}-${feat_set}-${sys_target}",
-        (substr(git_ref, 0, 10) == "refs/tags/" && cargo_profile == "release" && feat_set == "all")?
-            "ghcr.io/${repo}:latest": "",
+        docker_tag_preview? "ghcr.io/${repo}:preview": "",
+        docker_tag_latest? "ghcr.io/${repo}:latest": "",
     ]
     output = ["type=registry,compression=zstd,mode=min,compression-level=${image_compress_level}"]
     matrix = cargo_rust_feat_sys
@@ -275,8 +281,8 @@ target "dockerhub" {
     name = elem("dockerhub", [cargo_profile, rust_toolchain, rust_target, feat_set, sys_name, sys_version, sys_target])
     tags = [
         "${docker_repo}:${git_ref_name}-${cargo_profile}-${feat_set}-${sys_target}",
-        (substr(git_ref, 0, 10) == "refs/tags/" && cargo_profile == "release" && feat_set == "all")?
-            "${docker_repo}:latest": "",
+        docker_tag_preview? "${docker_repo}:preview": "",
+        docker_tag_latest? "${docker_repo}:latest": "",
     ]
     output = ["type=registry,compression=zstd,mode=min,compression-level=${image_compress_level}"]
     matrix = cargo_rust_feat_sys