Add container for speedier development and builds

.devcontainer/devcontainer.json

@@ -1,15 +1,14 @@
 {
     "name": "Anson's Projects",
-    "build":{
-        "dockerfile": "Dockerfile"
-    },
+    "image": "registry.gitlab.com/anson-projects/projects:latest",
     "customizations": {
         "vscode": {
             "extensions": [
                 "quarto.quarto",
-                "julialang.language-julia"
+                "julialang.language-julia",
+                "redhat.vscode-yaml",
+                "ms-azuretools.vscode-docker"
             ]
         }
     }
-    // "postCreateCommand": "julia -e 'import Pkg; Pkg.activate(\".\"); Pkg.instantiate()'"
 }