Allow local builds using a different arch than native

2024-01-10 13:00:48 -08:00
parent aca7796e9d
commit 5a09aa12ba
2 changed files with 17 additions and 1 deletions
--- a/lib/kamal/commands/builder/multiarch.rb
+++ b/lib/kamal/commands/builder/multiarch.rb
@@ -10,7 +10,7 @@ class Kamal::Commands::Builder::Multiarch < Kamal::Commands::Builder::Base
  def push
    docker :buildx, :build,
      "--push",
-      "--platform", "linux/amd64,linux/arm64",
+      "--platform", platform_names,
      "--builder", builder_name,
      *build_options,
      build_context
@@ -26,4 +26,12 @@ class Kamal::Commands::Builder::Multiarch < Kamal::Commands::Builder::Base
    def builder_name
      "kamal-#{config.service}-multiarch"
    end
+
+    def platform_names
+      if local_arch
+        "linux/#{local_arch}"
+      else
+        "linux/amd64,linux/arm64"
+      end
+    end
 end