Add mapenv label that is more agnostic

- that means that katenary.io/env-to-service is now DEPRECATED
- the yaml style in label is OK, that allows more possibilities and
  adaptation for users

helm/container.go

@@ -1,6 +1,7 @@
 package helm
 
 import (
+	"katenary/logger"
 	"strings"
 
 	"github.com/compose-spec/compose-go/types"
@@ -44,6 +45,17 @@ func NewContainer(name, image string, environment types.MappingWithEquals, label
 	if bound, ok := labels[LABEL_ENV_SERVICE]; ok {
 		toServices = strings.Split(bound, ",")
 	}
+	if len(toServices) > 0 {
+		// warn, it's deprecated now
+		logger.ActivateColors = true
+		logger.Yellowf(
+			"[deprecated] in \"%s\" service: label %s is deprecated, please use %s instead\n",
+			name,
+			LABEL_ENV_SERVICE,
+			LABEL_MAP_ENV,
+		)
+		logger.ActivateColors = false
+	}
 
 	idx := 0
 	for n, v := range environment {

helm/labels.go

@@ -7,15 +7,18 @@ import (
 
 const ReleaseNameTpl = "{{ .Release.Name }}"
 const (
+	LABEL_MAP_ENV     = K + "/mapenv"
 	LABEL_ENV_SECRET  = K + "/secret-envfiles"
 	LABEL_PORT        = K + "/ports"
 	LABEL_INGRESS     = K + "/ingress"
-	LABEL_ENV_SERVICE = K + "/env-to-service"
 	LABEL_VOL_CM      = K + "/configmap-volumes"
 	LABEL_HEALTHCHECK = K + "/healthcheck"
 	LABEL_SAMEPOD     = K + "/same-pod"
 	LABEL_EMPTYDIRS   = K + "/empty-dirs"
 	LABEL_IGNORE      = K + "/ignore"
+
+	//deprecated: use LABEL_MAP_ENV instead
+	LABEL_ENV_SERVICE = K + "/env-to-service"
 )
 
 // GetLabelsDocumentation returns the documentation for the labels.
@@ -24,9 +27,10 @@ func GetLabelsDocumentation() string {
 # Labels
 {{.LABEL_IGNORE      | printf "%-33s"}}: ignore the container, it will not yied any object in the helm chart
 {{.LABEL_ENV_SECRET  | printf "%-33s"}}: set the given file names as a secret instead of configmap
+{{.LABEL_MAP_ENV     | printf "%-33s"}}: map environment variable to a template string (yaml style)
 {{.LABEL_PORT        | printf "%-33s"}}: set the ports to expose as a service (coma separated)
 {{.LABEL_INGRESS     | printf "%-33s"}}: set the port to expose in an ingress (coma separated)
-{{.LABEL_ENV_SERVICE | printf "%-33s"}}: specifies that the environment variable points on a service name (coma separated)
+{{.LABEL_ENV_SERVICE | printf "%-33s"}}: DEPRECATED use {{ .LABEL_MAP_ENV }} instead - specifies that the environment variable points on a service name (coma separated) 
 {{.LABEL_VOL_CM      | printf "%-33s"}}: specifies that the volumes points on a configmap (coma separated)
 {{.LABEL_SAMEPOD     | printf "%-33s"}}: specifies that the pod should be deployed in the same pod than the given service name
 {{.LABEL_EMPTYDIRS   | printf "%-33s"}}: specifies that the given volume names should be "emptyDir" instead of persistentVolumeClaim (coma separated)
@@ -47,6 +51,7 @@ func GetLabelsDocumentation() string {
 		"LABEL_SAMEPOD":     LABEL_SAMEPOD,
 		"LABEL_EMPTYDIRS":   LABEL_EMPTYDIRS,
 		"LABEL_IGNORE":      LABEL_IGNORE,
+		"LABEL_MAP_ENV":     LABEL_MAP_ENV,
 	})
 	return buff.String()
 }