Report: fixed gui not built with Qt6. Improved dev containers. Add latest deps dev container for convenience.

.devcontainer/focal/devcontainer.json

@@ -1,8 +1,18 @@
 {
-    "image": "introlab3it/rtabmap:20.04",
+    "build": {
+      "dockerfile": "Dockerfile"
+    },
     "customizations": {
         "vscode": {
           "extensions": ["ms-vscode.cpptools-themes", "ms-vscode.cmake-tools"]
         }
-      }
+      },
+    "workspaceMount": "source=${localWorkspaceFolder},target=/home/vscode/rtabmap,type=bind",
+    "workspaceFolder": "/home/vscode/rtabmap",
+    "mounts": ["source=${localEnv:HOME}/Documents/RTAB-Map,target=/home/vscode/Documents/RTAB-Map,type=bind,consistency=cached"],
+    "settings": {
+      "terminal.integrated.defaultProfile.linux": "bash"
+    },
+    "remoteUser": "vscode",
+    "runArgs": ["--privileged", "--network=host"]
 }