Use mamba's micromamba dev container feature in codespaces

Author: QuLogic

.devcontainer/devcontainer.json

@@ -8,10 +8,11 @@
     "ghcr.io/devcontainers/features/desktop-lite:1": {},
     "ghcr.io/rocker-org/devcontainer-features/apt-packages:1": {
       "packages": "inkscape,ffmpeg,dvipng,lmodern,cm-super,texlive-latex-base,texlive-latex-extra,texlive-fonts-recommended,texlive-latex-recommended,texlive-pictures,texlive-xetex,fonts-wqy-zenhei,graphviz,fonts-crosextra-carlito,fonts-freefont-otf,fonts-comic-neue,fonts-noto-cjk,optipng"
+    },
+    "ghcr.io/mamba-org/devcontainer-features/micromamba:1": {
+      "envFile": "environment.yml",
     }
   },
-  "onCreateCommand": ".devcontainer/setup.sh",
-  "postCreateCommand": "",
   "forwardPorts": [6080],
   "portsAttributes": {
     "6080": {