refactor devcontainer for simpler ruby install

.vscode/launch.json

@@ -6,17 +6,14 @@
     "configurations": [
         {
             "type": "rdbg",
-            "name": "Debug current file with rdbg",
+            "name": "rdbg - demo_functionality.rb",
             "request": "launch",
-            "script": "${file}",
-            "askParameters": true,
-            "rdbgPath": "~/.rbenv/shims/rdbg"
+            "script": "demo_functionality.rb",
         },
         {
             "type": "rdbg",
-            "name": "Attach with rdbg",
+            "name": "rdbg - attach to rspec",
             "request": "attach",
-            "rdbgPath": "~/.rbenv/shims/rdbg"
         }
     ]
 }

.vscode/settings.json

@@ -2,11 +2,13 @@
     "editor.formatOnSave": true,
     "workbench.editor.titleScrollbarSizing": "large",
     "rubyLsp.formatter": "syntax_tree",
+    "rubyLsp.addonSettings": {
+        "Ruby LSP RSpec": {
+            "debug": true
+        }
+    },
     "[ruby]": {
         "editor.defaultFormatter": "Shopify.ruby-lsp"
     },
-    "rubyLsp.rubyVersionManager": {
-        "rbenvExecutablePath": "/usr/local/share/rbenv/bin/rbenv",
-    },
     "rdbg.useBundler": false,
 }