Add healtcheck + some fixes

- better docs
- add healtcheck based on docker-compoe commands or labels
- fix some problems on secret names
- better dependency check

compose/types.go

@@ -15,6 +15,15 @@ func NewCompose() *Compose {
 	return c
 }
 
+// HealthCheck manage generic type to handle TCP, HTTP and TCP health check.
+type HealthCheck struct {
+	Test        []string `yaml:"test"`
+	Interval    string   `yaml:"interval"`
+	Timeout     string   `yaml:"timeout"`
+	Retries     int      `yaml:"retries"`
+	StartPeriod string   `yaml:"start_period"`
+}
+
 // Service represent a "service" in a docker-compose file.
 type Service struct {
 	Image       string            `yaml:"image"`
@@ -26,4 +35,5 @@ type Service struct {
 	Expose      []int             `yaml:"expose"`
 	EnvFiles    []string          `yaml:"env_file"`
 	RawBuild    interface{}       `yaml:"build"`
+	HealthCheck *HealthCheck      `yaml:"healthcheck"`
 }