feat(deploy): Simplifies deploy overview (#508)

This simplifies the deploy overview, to only show 3 version fields:
- CURRENT DEPLOYMENT
- CURRENT ENV
- NEW DEPLOYMENT

It also fixes a few errors around version detection

Reviewed-on: toolshed/abra#508
Co-authored-by: p4u1 <p4u1_f4u1@riseup.net>
Co-committed-by: p4u1 <p4u1_f4u1@riseup.net>

pkg/app/compose.go

@@ -44,6 +44,16 @@ func SetChaosVersionLabel(compose *composetypes.Config, stackName string, chaosV
 	}
 }
 
+func SetVersionLabel(compose *composetypes.Config, stackName string, version string) {
+	for _, service := range compose.Services {
+		if service.Name == "app" {
+			log.Debugf("set label 'coop-cloud.%s.version' to %v for %s", stackName, version, stackName)
+			labelKey := fmt.Sprintf("coop-cloud.%s.version", stackName)
+			service.Deploy.Labels[labelKey] = version
+		}
+	}
+}
+
 // SetUpdateLabel adds env ENABLE_AUTO_UPDATE as label to enable/disable the
 // auto update process for this app. The default if this variable is not set is to disable
 // the auto update process.