feat: Allow building without docker support (#1507)

* feat: Allow building without docker support

* fix macos build tag

Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

pkg/container/docker_pull.go

@@ -1,3 +1,5 @@
+//go:build !(WITHOUT_DOCKER || !(linux || darwin || windows))
+
 package container
 
 import (
@@ -12,15 +14,6 @@ import (
 	"github.com/nektos/act/pkg/common"
 )
 
-// NewDockerPullExecutorInput the input for the NewDockerPullExecutor function
-type NewDockerPullExecutorInput struct {
-	Image     string
-	ForcePull bool
-	Platform  string
-	Username  string
-	Password  string
-}
-
 // NewDockerPullExecutor function to create a run executor for the container
 func NewDockerPullExecutor(input NewDockerPullExecutorInput) common.Executor {
 	return func(ctx context.Context) error {