Set chaos version label for each deployed or upgraded app

cli/app/rollback.go

@@ -183,6 +183,7 @@ recipes.
 		config.ExposeAllEnv(stackName, compose, app.Env)
 		config.SetRecipeLabel(compose, stackName, app.Recipe)
 		config.SetChaosLabel(compose, stackName, internal.Chaos)
+		config.SetChaosVersionLabel(compose, app.StackName(), chosenDowngrade)
 		config.SetUpdateLabel(compose, stackName, app.Env)
 
 		if !internal.Force {

cli/app/upgrade.go

@@ -194,6 +194,7 @@ recipes.
 		config.ExposeAllEnv(stackName, compose, app.Env)
 		config.SetRecipeLabel(compose, stackName, app.Recipe)
 		config.SetChaosLabel(compose, stackName, internal.Chaos)
+		config.SetChaosVersionLabel(compose, app.StackName(), chosenUpgrade)
 		config.SetUpdateLabel(compose, stackName, app.Env)
 
 		if err := internal.NewVersionOverview(app, deployedVersion, chosenUpgrade, releaseNotes); err != nil {

cli/internal/deploy.go

@@ -139,6 +139,7 @@ func DeployAction(c *cli.Context) error {
 	config.ExposeAllEnv(app.StackName(), compose, app.Env)
 	config.SetRecipeLabel(compose, app.StackName(), app.Recipe)
 	config.SetChaosLabel(compose, app.StackName(), Chaos)
+	config.SetChaosVersionLabel(compose, app.StackName(), version)
 	config.SetUpdateLabel(compose, app.StackName(), app.Env)
 
 	if err := DeployOverview(app, version, "continue with deployment?"); err != nil {

pkg/config/app.go

@@ -499,6 +499,17 @@ func SetChaosLabel(compose *composetypes.Config, stackName string, chaos bool) {
 	}
 }
 
+// SetChaosVersionLabel adds the label 'coop-cloud.${STACK_NAME}.chaos_version=$(GIT_COMMIT)' to the app container
+func SetChaosVersionLabel(compose *composetypes.Config, stackName string, chaosVersion string) {
+	for _, service := range compose.Services {
+		if service.Name == "app" {
+			logrus.Debugf("set label 'coop-cloud.%s.chaos_version' to %v for %s", stackName, chaosVersion, stackName)
+			labelKey := fmt.Sprintf("coop-cloud.%s.chaos_version", stackName)
+			service.Deploy.Labels[labelKey] = chaosVersion
+		}
+	}
+}
+
 // 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.