Add step name as label to docker containers (#3137)

and add a test

pipeline/backend/docker/convert.go

@@ -17,6 +17,7 @@ package docker
 import (
 	"encoding/base64"
 	"encoding/json"
+	"maps"
 	"regexp"
 	"strings"
 
@@ -29,24 +30,29 @@ import (
 // returns a container configuration.
 func (e *docker) toConfig(step *types.Step) *container.Config {
 	config := &container.Config{
-		Image:        step.Image,
-		Labels:       map[string]string{"wp_uuid": step.UUID},
+		Image: step.Image,
+		Labels: map[string]string{
+			"wp_uuid": step.UUID,
+			"wp_step": step.Name,
+		},
 		WorkingDir:   step.WorkingDir,
 		AttachStdout: true,
 		AttachStderr: true,
 	}
+	env := make(map[string]string)
+	maps.Copy(env, step.Environment)
 
 	if len(step.Commands) != 0 {
 		env, entry, cmd := common.GenerateContainerConf(step.Commands, e.info.OSType)
 		for k, v := range env {
-			step.Environment[k] = v
+			env[k] = v
 		}
 		config.Entrypoint = entry
 		config.Cmd = cmd
 	}
 
-	if len(step.Environment) != 0 {
-		config.Env = toEnv(step.Environment)
+	if len(env) != 0 {
+		config.Env = toEnv(env)
 	}
 	if len(step.Volumes) != 0 {
 		config.Volumes = toVol(step.Volumes)

pipeline/backend/docker/convert_test.go

@@ -17,6 +17,12 @@ package docker
 import (
 	"reflect"
 	"testing"
+
+	"github.com/docker/docker/api/types"
+	"github.com/docker/docker/api/types/container"
+	"github.com/stretchr/testify/assert"
+
+	backend "go.woodpecker-ci.org/woodpecker/v2/pipeline/backend/types"
 )
 
 func TestSplitVolumeParts(t *testing.T) {
@@ -85,3 +91,25 @@ func TestSplitVolumeParts(t *testing.T) {
 		}
 	}
 }
+
+func TestToConfigSmall(t *testing.T) {
+	engine := docker{info: types.Info{OSType: "linux/riscv64"}}
+
+	conf := engine.toConfig(&backend.Step{
+		Name:     "test",
+		UUID:     "09238932",
+		Commands: []string{"go test"},
+	})
+
+	assert.NotNil(t, conf)
+	assert.EqualValues(t, &container.Config{
+		AttachStdout: true,
+		AttachStderr: true,
+		Cmd:          []string{"echo $CI_SCRIPT | base64 -d | /bin/sh -e"},
+		Entrypoint:   []string{"/bin/sh", "-c"},
+		Labels: map[string]string{
+			"wp_step": "test",
+			"wp_uuid": "09238932",
+		},
+	}, conf)
+}