remove undocumented docker specific option (#1825)

pipeline/backend/docker/convert.go

@@ -30,7 +30,6 @@ import (
 func toConfig(step *types.Step) *container.Config {
 	config := &container.Config{
 		Image:        step.Image,
-		Labels:       step.Labels,
 		WorkingDir:   step.WorkingDir,
 		AttachStdout: true,
 		AttachStderr: true,

pipeline/backend/types/step.go

@@ -10,7 +10,6 @@ type Step struct {
 	Privileged     bool              `json:"privileged,omitempty"`
 	WorkingDir     string            `json:"working_dir,omitempty"`
 	Environment    map[string]string `json:"environment,omitempty"`
-	Labels         map[string]string `json:"labels,omitempty"`
 	Entrypoint     []string          `json:"entrypoint,omitempty"`
 	Commands       []string          `json:"commands,omitempty"`
 	ExtraHosts     []string          `json:"extra_hosts,omitempty"`

pipeline/frontend/yaml/compiler/convert.go

@@ -164,7 +164,6 @@ func (c *Compiler) createProcess(name string, container *yaml.Container, section
 		Privileged:     privileged,
 		WorkingDir:     workingdir,
 		Environment:    environment,
-		Labels:         container.Labels,
 		Commands:       container.Commands,
 		ExtraHosts:     container.ExtraHosts,
 		Volumes:        volumes,

pipeline/frontend/yaml/container.go

@@ -59,7 +59,6 @@ type (
 		Image          string                 `yaml:"image,omitempty"`
 		Failure        string                 `yaml:"failure,omitempty"`
 		Isolation      string                 `yaml:"isolation,omitempty"`
-		Labels         types.SliceorMap       `yaml:"labels,omitempty"`
 		MemLimit       types.MemStringorInt   `yaml:"mem_limit,omitempty"`
 		MemSwapLimit   types.MemStringorInt   `yaml:"memswap_limit,omitempty"`
 		MemSwappiness  types.MemStringorInt   `yaml:"mem_swappiness,omitempty"`

pipeline/frontend/yaml/container_test.go

@@ -44,9 +44,6 @@ networks:
   - other-network
 pull: true
 privileged: true
-labels:
-  com.example.type: build
-  com.example.team: frontend
 shm_size: 1kb
 mem_limit: 1kb
 memswap_limit: 1kb
@@ -87,7 +84,6 @@ func TestUnmarshalContainer(t *testing.T) {
 		ExtraHosts:    []string{"somehost:162.242.195.82", "otherhost:50.31.209.229"},
 		Image:         "golang:latest",
 		Isolation:     "hyperv",
-		Labels:        types.SliceorMap{"com.example.type": "build", "com.example.team": "frontend"},
 		MemLimit:      types.MemStringorInt(1024),
 		MemSwapLimit:  types.MemStringorInt(1024),
 		MemSwappiness: types.MemStringorInt(1024),