feat: version arguments, local tag lookups & release notes

See:
* coop-cloud/organising#441
* coop-cloud/organising#204
* coop-cloud/organising#493

cli/app/deploy.go

@@ -23,7 +23,7 @@ var appDeployCommand = cli.Command{
 	Name:      "deploy",
 	Aliases:   []string{"d"},
 	Usage:     "Deploy an app",
-	ArgsUsage: "<domain>",
+	ArgsUsage: "<domain> [<version>]",
 	Flags: []cli.Flag{
 		internal.DebugFlag,
 		internal.NoInputFlag,
@@ -99,9 +99,17 @@ recipes.
 			}
 		}
 
-		isLatestHash := false
 		version := deployedVersion
-		if !internal.Chaos {
+		specificVersion := c.Args().Get(1)
+		if specificVersion != "" {
+			version = specificVersion
+			logrus.Debugf("choosing %s as version to deploy", version)
+			if err := recipe.EnsureVersion(app.Recipe, version); err != nil {
+				logrus.Fatal(err)
+			}
+		}
+
+		if !internal.Chaos && specificVersion == "" {
 			catl, err := recipe.ReadRecipeCatalogue(internal.Offline)
 			if err != nil {
 				logrus.Fatal(err)
@@ -110,7 +118,21 @@ recipes.
 			if err != nil {
 				logrus.Fatal(err)
 			}
-			if len(versions) > 0 {
+
+			if len(versions) == 0 && !internal.Chaos {
+				logrus.Warn("no published versions in catalogue, trying local recipe repository")
+				recipeVersions, err := recipe.GetRecipeVersions(app.Recipe, internal.Offline)
+				if err != nil {
+					logrus.Warn(err)
+				}
+				for _, recipeVersion := range recipeVersions {
+					for version := range recipeVersion {
+						versions = append(versions, version)
+					}
+				}
+			}
+
+			if len(versions) > 0 && !internal.Chaos {
 				version = versions[len(versions)-1]
 				logrus.Debugf("choosing %s as version to deploy", version)
 				if err := recipe.EnsureVersion(app.Recipe, version); err != nil {
@@ -121,19 +143,11 @@ recipes.
 				if err != nil {
 					logrus.Fatal(err)
 				}
-				isLatestHash = true
 				version = formatter.SmallSHA(head.String())
 				logrus.Warn("no versions detected, using latest commit")
 			}
 		}
 
-		if version != "unknown" && !internal.Chaos && !isLatestHash {
-			logrus.Debugf("choosing %s as version to deploy", version)
-			if err := recipe.EnsureVersion(app.Recipe, version); err != nil {
-				logrus.Fatal(err)
-			}
-		}
-
 		if internal.Chaos {
 			logrus.Warnf("chaos mode engaged")
 			var err error