Removed swagger requirement from binary-minimal and binary (#838)

Signed-off-by: Catalin Hofnar <catalin.hofnar@gmail.com>

pkg/debug/swagger/swagger.go

@@ -0,0 +1,24 @@
+//go:build debug
+// +build debug
+
+// @contact.name API Support
+// @contact.url http://www.swagger.io/support
+// @contact.email support@swagger.io
+
+package debug
+
+import (
+	"github.com/gorilla/mux"
+	httpSwagger "github.com/swaggo/http-swagger"
+	"zotregistry.io/zot/pkg/api/config"
+	"zotregistry.io/zot/pkg/log" // nolint:goimports
+	// as required by swaggo.
+	_ "zotregistry.io/zot/swagger"
+)
+
+func SetupSwaggerRoutes(conf *config.Config, router *mux.Router, log log.Logger,
+) {
+	log.Info().Msg("setting up swagger route")
+	// swagger swagger "/swagger/v2/index.html"
+	router.PathPrefix("/swagger/v2/").Methods("GET").Handler(httpSwagger.WrapHandler)
+}

pkg/debug/swagger/swagger_disabled.go

@@ -0,0 +1,23 @@
+//go:build !debug
+// +build !debug
+
+// @contact.name API Support
+// @contact.url http://www.swagger.io/support
+// @contact.email support@swagger.io
+
+package debug
+
+import (
+	"github.com/gorilla/mux"
+	"zotregistry.io/zot/pkg/api/config"
+	"zotregistry.io/zot/pkg/log" // nolint:goimports
+	// as required by swaggo.
+	_ "zotregistry.io/zot/swagger"
+)
+
+func SetupSwaggerRoutes(conf *config.Config, router *mux.Router, log log.Logger,
+) {
+	// swagger swagger "/swagger/v2/index.html"
+	log.Warn().Msg("skipping enabling swagger because given zot binary" +
+		"doesn't include this feature, please build a binary that does so")
+}