cfg: remove [Build.command] from repository config

Setting a default build command in the repository configuration can be
handy but has the issue, that all applications need to add the
.baur.toml file as buildinput.
Otherwise they are not able to detect that the build command changed in
the repository wide configuration.
Adding the .baur.toml file as buildinput isn't feasible, it means that
all applications are rebuild when e.g. the postgres url changes.

- Remove the Build.Command parameter from the repository config
- Setting a build.command in the .app.toml file is now mandatory
- Change the build.command to "make" and uncomment the parameter in the
  example configuration file

app.go

@@ -153,10 +153,6 @@ func NewApp(repository *Repository, cfgPath string) (*App, error) {
 		BuildCmd:   cfg.Build.Command,
 	}
 
-	if len(app.BuildCmd) == 0 {
-		app.BuildCmd = repository.DefaultBuildCmd
-	}
-
 	if err := app.setDockerOutputsFromCfg(cfg); err != nil {
 		return nil, errors.Wrap(err, "processing docker output declarations failed")
 	}

cfg/app.go

@@ -18,7 +18,7 @@ type App struct {
 
 // Build the build section
 type Build struct {
-	Command string      `toml:"command" commented:"true" comment:"command to build the application, overwrites the parameter in the repository config"`
+	Command string      `toml:"command" commented:"false" comment:"command to build the application"`
 	Input   BuildInput  `comment:"specifies the inputs for an build, an input is everything that affects the build output"`
 	Output  BuildOutput `comment:"specifies the outputs that the application build produces"`
 }
@@ -93,7 +93,7 @@ func ExampleApp(name string) *App {
 		Name: name,
 
 		Build: Build{
-			Command: "make docker_dist",
+			Command: "make dist",
 			Input: BuildInput{
 				Files: FileInputs{
 					Paths: []string{".app.toml"},
@@ -238,6 +238,9 @@ func (a *App) Validate() error {
 
 // Validate validates the build section
 func (b *Build) Validate() error {
+	if len(b.Command) == 0 {
+		return errors.New("[Build] section contains errors: command can not be empty")
+	}
 	if err := b.Input.Validate(); err != nil {
 		return err
 	}

cfg/repository.go

@@ -18,10 +18,9 @@ const (
 
 // Repository contains the repository configuration.
 type Repository struct {
-	Discover    Discover        `comment:"application discovery settings"`
-	Build       RepositoryBuild `comment:"build configuration"`
-	BaurVersion string          `toml:"baur_version" comment:"version of baur"`
-	Database    Database        `toml:"Database" comment:"configures the database in which build informations are stored"`
+	Discover    Discover `comment:"application discovery settings"`
+	BaurVersion string   `toml:"baur_version" comment:"version of baur"`
+	Database    Database `toml:"Database" comment:"configures the database in which build informations are stored"`
 }
 
 // Database contains database configuration
@@ -35,11 +34,6 @@ type Discover struct {
 	SearchDepth int      `toml:"search_depth" comment:"specifies the max. directory the application search recurses into subdirectories"`
 }
 
-// RepositoryBuild contains the build section of the repository
-type RepositoryBuild struct {
-	BuildCmd string `toml:"build_command" comment:"command to build the application, can be overwritten in the application config files"`
-}
-
 // RepositoryFromFile reads the repository config from a file and returns it.
 func RepositoryFromFile(cfgPath string) (*Repository, error) {
 	config := Repository{}
@@ -65,9 +59,6 @@ func ExampleRepository() *Repository {
 			Dirs:        []string{"."},
 			SearchDepth: 1,
 		},
-		Build: RepositoryBuild{
-			BuildCmd: "make docker_dist",
-		},
 
 		Database: Database{
 			PGSQLURL: "postgresql://guest:guest@jenkins.sisu.sh:5432/baur",
@@ -117,11 +108,6 @@ func (r *Repository) Validate() error {
 		return errors.Wrap(err, "[Discover] section contains errors")
 	}
 
-	err = r.Build.Validate()
-	if err != nil {
-		return errors.Wrap(err, "[Build] section contains errors")
-	}
-
 	err = r.Database.Validate()
 	if err != nil {
 		return errors.Wrap(err, "[Database] section contains errors")
@@ -144,15 +130,6 @@ func (d *Discover) Validate() error {
 	return nil
 }
 
-// Validate validates the [Build] section of a repository config file
-func (b *RepositoryBuild) Validate() error {
-	if len(b.BuildCmd) == 0 {
-		return errors.New("build_command can not be empty")
-	}
-
-	return nil
-}
-
 // Validate validates the [Database] section of a repository config file
 func (d *Database) Validate() error {
 	if len(d.PGSQLURL) == 0 {

repository.go

@@ -21,7 +21,6 @@ type Repository struct {
 	CfgPath            string
 	AppSearchDirs      []string
 	SearchDepth        int
-	DefaultBuildCmd    string
 	gitCommitID        string
 	gitWorktreeIsDirty *bool
 	PSQLURL            string
@@ -96,12 +95,11 @@ func NewRepository(cfgPath string) (*Repository, error) {
 	}
 
 	r := Repository{
-		CfgPath:         cfgPath,
-		DefaultBuildCmd: cfg.Build.BuildCmd,
-		Path:            path.Dir(cfgPath),
-		AppSearchDirs:   fs.PathsJoin(path.Dir(cfgPath), cfg.Discover.Dirs),
-		SearchDepth:     cfg.Discover.SearchDepth,
-		PSQLURL:         cfg.Database.PGSQLURL,
+		CfgPath:       cfgPath,
+		Path:          path.Dir(cfgPath),
+		AppSearchDirs: fs.PathsJoin(path.Dir(cfgPath), cfg.Discover.Dirs),
+		SearchDepth:   cfg.Discover.SearchDepth,
+		PSQLURL:       cfg.Database.PGSQLURL,
 	}
 
 	err = fs.DirsExist(r.AppSearchDirs)