Small clean ups in development.

.devcontainer/devcontainer.json

+{
+    "name": "virtual-fluids-environment",
+    "extensions": [
+        "mhutchie.git-graph",
+        "donjayamanne.githistory",
+        "twxs.cmake",
+        "ms-vscode.cpptools",
+        "visualstudioexptteam.vscodeintellicode",
+        "xaver.clang-format",
+        "notskm.clang-tidy"
+    ],
+    "runArgs": ["--gpus","all"],
+    "image": "git.rz.tu-bs.de:4567/irmb/virtualfluids/ubuntu20_04:1.2"
+}