diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index c4d2b08c81b0899be69370b3f95123de250a649f..f2df57eeb8a817e2356ad52ec78fe9281b5b9074 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -42,7 +42,6 @@ lint:
       - branches
     variables:
       - $CI_COMMIT_REF_SLUG != "master"
-  when: manual
 
 build-binary-alpine:
   image: golang:1.17-alpine
@@ -58,14 +57,14 @@ build-binary-alpine:
     - apk add --update --no-cache make git
     - make build
 
-build-binary-client-linux:
+build-binary-client-dev:
   <<: *only_feature
   stage: build-binary
   artifacts:
     paths:
       - bin
   script:
-    - go build -o bin/dblab-linux-amd64 ./cmd/cli/main.go
+    - make build-client
 
 build-binary-client:
   <<: *only_tag_release
@@ -88,7 +87,6 @@ build-binary-client:
 build-binary-client-rc:
   <<: *only_tag_rc
   stage: build-binary
-  when: manual
   script:
     - make build-client
 
@@ -159,7 +157,7 @@ build-image-feature-client-extended:
     DOCKER_NAME: "registry.gitlab.com/postgres-ai/database-lab/dblab-extended"
     TAGS: "${DOCKER_NAME}:${CI_COMMIT_REF_SLUG}"
   before_script:
-    - cp ./bin/dblab-linux-amd64 ./bin/dblab
+    - cp ./bin/cli/dblab-linux-amd64 ./bin/dblab
 
 build-image-master-server:
   <<: *build_image_definition
diff --git a/cmd/database-lab/main.go b/cmd/database-lab/main.go
index 149612398058ff75dd55be454fed08540b95a7d0..e4fac27c7473e557b7c99f243805cb5d769b004e 100644
--- a/cmd/database-lab/main.go
+++ b/cmd/database-lab/main.go
@@ -175,8 +175,6 @@ func main() {
 				log.Err("Failed to start local UI container:", err.Error())
 				return
 			}
-
-			log.Msg("Local UI has started successfully")
 		}()
 	}
 
diff --git a/configs/config.example.logical_generic.yml b/configs/config.example.logical_generic.yml
index 98e7c69e13b51761ce6f2bf604e1c1b9656704c4..b3fd37bbf3e7c50052f23bc67471bb70d117f792 100644
--- a/configs/config.example.logical_generic.yml
+++ b/configs/config.example.logical_generic.yml
@@ -15,13 +15,11 @@ server:
   # their personal tokens generated on the Platform. In this case,
   # it is recommended to keep "verificationToken" secret, known
   # only to the administrator of the Database Lab instance.
+  #
+  # Database Lab Engine can be running with an empty verification token, which is not recommended.
+  # In this case, the DLE API and the UI application will not require any credentials.
   verificationToken: "secret_token"
 
-  # The host to which the Database Lab server accepts HTTP connections.
-  # By default uses an empty string to accept connections to all network interfaces.
-  # Keep it default when running inside a Docker container.
-  host: ""
-
   # HTTP server port. Default: 2345.
   port: 2345
 
diff --git a/configs/config.example.logical_rds_iam.yml b/configs/config.example.logical_rds_iam.yml
index 796be79fb491ca9bc770654977816e25d01230e6..15aee308f5908b258ebde5083386ec5161d57a2c 100644
--- a/configs/config.example.logical_rds_iam.yml
+++ b/configs/config.example.logical_rds_iam.yml
@@ -15,13 +15,11 @@ server:
   # their personal tokens generated on the Platform. In this case,
   # it is recommended to keep "verificationToken" secret, known
   # only to the administrator of the Database Lab instance.
+  #
+  # Database Lab Engine can be running with an empty verification token, which is not recommended.
+  # In this case, the DLE API and the UI application will not require any credentials.
   verificationToken: "secret_token"
 
-  # The host to which the Database Lab server accepts HTTP connections.
-  # By default uses an empty string to accept connections to all network interfaces.
-  # Keep it default when running inside a Docker container.
-  host: ""
-
   # HTTP server port. Default: 2345.
   port: 2345
 
diff --git a/configs/config.example.physical_generic.yml b/configs/config.example.physical_generic.yml
index 3b04b22e26489b85ba95e847d7b0b89e2963c8c7..e8c32f4d934917d6f8f89b87a0da5022b2e02f69 100644
--- a/configs/config.example.physical_generic.yml
+++ b/configs/config.example.physical_generic.yml
@@ -15,13 +15,11 @@ server:
   # their personal tokens generated on the Platform. In this case,
   # it is recommended to keep "verificationToken" secret, known
   # only to the administrator of the Database Lab instance.
+  #
+  # Database Lab Engine can be running with an empty verification token, which is not recommended.
+  # In this case, the DLE API and the UI application will not require any credentials.
   verificationToken: "secret_token"
 
-  # The host to which the Database Lab server accepts HTTP connections.
-  # By default uses an empty string to accept connections to all network interfaces.
-  # Keep it default when running inside a Docker container.
-  host: ""
-
   # HTTP server port. Default: 2345.
   port: 2345
 
diff --git a/configs/config.example.physical_walg.yml b/configs/config.example.physical_walg.yml
index 8b1a4f1104d269a15425f80e5f846203d077ac2a..f54398b2e38f87e4ff6051c9ad0e193efb4c3dea 100644
--- a/configs/config.example.physical_walg.yml
+++ b/configs/config.example.physical_walg.yml
@@ -15,13 +15,11 @@ server:
   # their personal tokens generated on the Platform. In this case,
   # it is recommended to keep "verificationToken" secret, known
   # only to the administrator of the Database Lab instance.
+  #
+  # Database Lab Engine can be running with an empty verification token, which is not recommended.
+  # In this case, the DLE API and the UI application will not require any credentials.
   verificationToken: "secret_token"
 
-  # The host to which the Database Lab server accepts HTTP connections.
-  # By default uses an empty string to accept connections to all network interfaces.
-  # Keep it default when running inside a Docker container.
-  host: ""
-
   # HTTP server port. Default: 2345.
   port: 2345
 
diff --git a/internal/localui/local_ui.go b/internal/localui/local_ui.go
index 501c09dd2f2b85351eddafc234573b7d716b07ba..fee0833a7a130d865f869dfdcd369410aebdb235 100644
--- a/internal/localui/local_ui.go
+++ b/internal/localui/local_ui.go
@@ -22,6 +22,8 @@ import (
 	"gitlab.com/postgres-ai/database-lab/v3/internal/retrieval/engine/postgres/tools"
 	"gitlab.com/postgres-ai/database-lab/v3/internal/retrieval/engine/postgres/tools/cont"
 	"gitlab.com/postgres-ai/database-lab/v3/pkg/config/global"
+	"gitlab.com/postgres-ai/database-lab/v3/pkg/log"
+	"gitlab.com/postgres-ai/database-lab/v3/pkg/util/engine"
 	"gitlab.com/postgres-ai/database-lab/v3/pkg/util/networks"
 )
 
@@ -138,6 +140,8 @@ func (ui *UIManager) Run(ctx context.Context) error {
 		return fmt.Errorf("failed to start container %q: %w", localUI.ID, err)
 	}
 
+	reportLaunching(ui.cfg)
+
 	return nil
 }
 
@@ -160,3 +164,14 @@ func (ui *UIManager) Stop(ctx context.Context) {
 func getLocalUIName(instanceID string) string {
 	return cont.DBLabLocalUILabel + "_" + instanceID
 }
+
+// reportLaunching reports the launch of the LocalUI container.
+func reportLaunching(cfg Config) {
+	host := engine.DefaultListenerHost
+
+	if cfg.Host != "" {
+		host = cfg.Host
+	}
+
+	log.Msg(fmt.Sprintf("Local UI has started successfully on %s:%d.", host, cfg.Port))
+}
diff --git a/internal/srv/routes.go b/internal/srv/routes.go
index 690aadcbe239a8297cc8444600bc943dd330d815..36e4df2a507b202427351ff2468c4db94a96801a 100644
--- a/internal/srv/routes.go
+++ b/internal/srv/routes.go
@@ -80,7 +80,14 @@ func (s *Server) createClone(w http.ResponseWriter, r *http.Request) {
 
 	newClone, err := s.Cloning.CreateClone(cloneRequest)
 	if err != nil {
+		var reqErr *models.Error
+		if errors.As(err, &reqErr) {
+			api.SendBadRequestError(w, r, reqErr.Error())
+			return
+		}
+
 		api.SendError(w, r, errors.Wrap(err, "failed to create clone"))
+
 		return
 	}
 
diff --git a/internal/srv/server.go b/internal/srv/server.go
index d7f6f2f7d730b110ccba63e82dfa1c83af895cd6..120d6201a73028102a23ab05a7236f5d8ffc6b4a 100644
--- a/internal/srv/server.go
+++ b/internal/srv/server.go
@@ -144,7 +144,7 @@ func (s *Server) InitHandlers() {
 
 // Run starts HTTP server on specified port in configuration.
 func (s *Server) Run() error {
-	log.Msg(fmt.Sprintf("Server started listening on %s:%d.", s.Config.Host, s.Config.Port))
+	reportLaunching(s.Config)
 	return s.httpSrv.ListenAndServe()
 }
 
@@ -158,3 +158,8 @@ func (s *Server) Shutdown(ctx context.Context) error {
 func (s *Server) Uptime() float64 {
 	return time.Since(s.startedAt).Truncate(time.Second).Seconds()
 }
+
+// reportLaunching reports the launch of the HTTP server.
+func reportLaunching(cfg *srvCfg.Config) {
+	log.Msg(fmt.Sprintf("API server started listening on %s:%d.", cfg.Host, cfg.Port))
+}
diff --git a/pkg/util/engine/engine.go b/pkg/util/engine/engine.go
new file mode 100644
index 0000000000000000000000000000000000000000..3a0b779acc53f977f0175150d4d7fdbbe86557b5
--- /dev/null
+++ b/pkg/util/engine/engine.go
@@ -0,0 +1,9 @@
+/*
+2021 © Postgres.ai
+*/
+
+// Package engine contains tools.
+package engine
+
+// DefaultListenerHost defines the default host of an HTTP listener.
+const DefaultListenerHost = "0.0.0.0"