Use compose-go + improvements (#9)

Use compose-go https://github.com/compose-spec/compose-go  to make Katenary parsing compose file the official way.
Add labels:
- `volume-from` (with `same-pod`) to avoid volume repetition
- `ignore` to ignore a service
- `mapenv` (replaces the `env-to-service`) to map environment to helm variable (as a template string)
- `secret-vars` declares variables as secret values

More:
- Now, environment (as secret vars) are set in values.yaml
- Ingress has got annotations in values.yaml
- Probes (liveness probe) are improved
- fixed code to optimize
- many others fixes about path, bad volume check, refactorisation, tests...

helm/container.go

@@ -0,0 +1,65 @@
+package helm
+
+import (
+	"katenary/logger"
+	"strings"
+
+	"github.com/compose-spec/compose-go/types"
+)
+
+type EnvValue interface{}
+
+// ContainerPort represent a port mapping.
+type ContainerPort struct {
+	Name          string
+	ContainerPort int `yaml:"containerPort"`
+}
+
+// Value represent a environment variable with name and value.
+type Value struct {
+	Name  string   `yaml:"name"`
+	Value EnvValue `yaml:"value"`
+}
+
+// Container represent a container with name, image, and environment variables. It is used in Deployment.
+type Container struct {
+	Name          string                         `yaml:"name,omitempty"`
+	Image         string                         `yaml:"image"`
+	Ports         []*ContainerPort               `yaml:"ports,omitempty"`
+	Env           []*Value                       `yaml:"env,omitempty"`
+	EnvFrom       []map[string]map[string]string `yaml:"envFrom,omitempty"`
+	Command       []string                       `yaml:"command,omitempty"`
+	VolumeMounts  []interface{}                  `yaml:"volumeMounts,omitempty"`
+	LivenessProbe *Probe                         `yaml:"livenessProbe,omitempty"`
+}
+
+// NewContainer creates a new container with name, image, labels and environment variables.
+func NewContainer(name, image string, environment types.MappingWithEquals, labels map[string]string) *Container {
+	container := &Container{
+		Image:   image,
+		Name:    name,
+		EnvFrom: make([]map[string]map[string]string, 0),
+	}
+
+	// find bound environment variable to a service
+	toServices := make([]string, 0)
+	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 and **ignored**, please use %s instead\n"+
+				"e.g.\n"+
+				"  labels:\n"+
+				"    FOO: {{ .Release.Name }}-fooservice\n",
+			name,
+			LABEL_ENV_SERVICE,
+			LABEL_MAP_ENV,
+		)
+		logger.ActivateColors = false
+	}
+
+	return container
+}