Exclude dummy backend in production (#3877)

cli/exec/dummy.go

@@ -0,0 +1,24 @@
+// Copyright 2024 Woodpecker Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//go:build test
+// +build test
+
+package exec
+
+import "go.woodpecker-ci.org/woodpecker/v2/pipeline/backend/dummy"
+
+func init() { //nolint:gochecknoinits
+	backends = append(backends, dummy.New())
+}

cli/exec/exec.go

@@ -33,7 +33,6 @@ import (
 	"go.woodpecker-ci.org/woodpecker/v2/pipeline"
 	"go.woodpecker-ci.org/woodpecker/v2/pipeline/backend"
 	"go.woodpecker-ci.org/woodpecker/v2/pipeline/backend/docker"
-	"go.woodpecker-ci.org/woodpecker/v2/pipeline/backend/dummy"
 	"go.woodpecker-ci.org/woodpecker/v2/pipeline/backend/kubernetes"
 	"go.woodpecker-ci.org/woodpecker/v2/pipeline/backend/local"
 	backend_types "go.woodpecker-ci.org/woodpecker/v2/pipeline/backend/types"
@@ -54,6 +53,12 @@ var Command = &cli.Command{
 	Flags:     utils.MergeSlices(flags, docker.Flags, kubernetes.Flags, local.Flags),
 }
 
+var backends = []backend_types.Backend{
+	kubernetes.New(),
+	docker.New(),
+	local.New(),
+}
+
 func run(c *cli.Context) error {
 	return common.RunPipelineFunc(c, execFile, execDir)
 }
@@ -231,12 +236,6 @@ func execWithAxis(c *cli.Context, file, repoPath string, axis matrix.Axis) error
 	}
 
 	backendCtx := context.WithValue(c.Context, backend_types.CliContext, c)
-	backends := []backend_types.Backend{
-		kubernetes.New(),
-		docker.New(),
-		local.New(),
-		dummy.New(),
-	}
 	backendEngine, err := backend.FindBackend(backendCtx, backends, c.String("backend-engine"))
 	if err != nil {
 		return err