Fix LLDB settings

Author: Chuxel

containers/swift-4/.devcontainer/devcontainer.json

@@ -14,6 +14,8 @@
 	// You can edit these settings after create using File > Preferences > Settings > Remote.
 	"settings": { 
 		"terminal.integrated.shell.linux": "/bin/bash",
+		"lldb.adapterType": "bundled",
+		"lldb.executable": "/usr/bin/lldb",
 		"swift.path.sourcekite": "/sourcekite/.build/x86_64-unknown-linux/release/sourcekite"
 	},