fix: warn on invalid envs for catalogue generation

Closes coop-cloud/organising#256.

cli/internal/validate.go

@@ -27,7 +27,11 @@ func ValidateRecipe(c *cli.Context) recipe.Recipe {
 
 	recipe, err := recipe.Get(recipeName)
 	if err != nil {
-		logrus.Fatal(err)
+		if c.Command.Name == "generate" {
+			logrus.Warn(err)
+		} else {
+			logrus.Fatal(err)
+		}
 	}
 
 	logrus.Debugf("validated '%s' as recipe argument", recipeName)

pkg/recipe/recipe.go

@@ -84,7 +84,7 @@ func Get(recipeName string) (Recipe, error) {
 	envSamplePath := path.Join(config.ABRA_DIR, "apps", recipeName, ".env.sample")
 	sampleEnv, err := config.ReadEnv(envSamplePath)
 	if err != nil {
-		logrus.Fatal(err)
+		return Recipe{}, err
 	}
 
 	opts := stack.Deploy{Composefiles: composeFiles}