Support GitHub Codespaces (#136)

* Test devcontainer changes

* Update

* Delete devcontainer.json

* Testing devcontainer improvements

* Update Dockerfile

* Update Dockerfile

* Delete devcontainer.json

* Trying again

* Make the magic happen!

* Try to auto-launch mkdocs on start

.devcontainer/devcontainer.json

@@ -1,4 +1,48 @@
+// For format details, see https://aka.ms/devcontainer.json. For config options, see the README at:
+// https://github.com/microsoft/vscode-dev-containers/tree/v0.154.0/containers/python-3
 {
-    "build": { "dockerFile": "Dockerfile" },
-    "forwardPorts": [8000]
-}
+	"name": "Python 3",
+	"build": {
+		"dockerfile": "Dockerfile",
+		"context": "..",
+		"args": { 
+			// Update 'VARIANT' to pick a Python version: 3, 3.6, 3.7, 3.8, 3.9
+			"VARIANT": "3",
+			// Options
+			"INSTALL_NODE": "false",
+			"NODE_VERSION": "lts/*"
+		}
+	},
+
+	// Set *default* container specific settings.json values on container create.
+	"settings": { 
+		"terminal.integrated.shell.linux": "/bin/bash",
+		"python.pythonPath": "/usr/local/bin/python",
+		"python.linting.enabled": true,
+		"python.linting.pylintEnabled": true,
+		"python.formatting.autopep8Path": "/usr/local/py-utils/bin/autopep8",
+		"python.formatting.blackPath": "/usr/local/py-utils/bin/black",
+		"python.formatting.yapfPath": "/usr/local/py-utils/bin/yapf",
+		"python.linting.banditPath": "/usr/local/py-utils/bin/bandit",
+		"python.linting.flake8Path": "/usr/local/py-utils/bin/flake8",
+		"python.linting.mypyPath": "/usr/local/py-utils/bin/mypy",
+		"python.linting.pycodestylePath": "/usr/local/py-utils/bin/pycodestyle",
+		"python.linting.pydocstylePath": "/usr/local/py-utils/bin/pydocstyle",
+		"python.linting.pylintPath": "/usr/local/py-utils/bin/pylint"
+	},
+
+	// Add the IDs of extensions you want installed when the container is created.
+	"extensions": [
+        "yzhang.markdown-all-in-one",
+        "darkriszty.markdown-table-prettify"
+	],
+
+	// Use 'forwardPorts' to make a list of ports inside the container available locally.
+	"forwardPorts": [8000],
+
+	// Use 'postCreateCommand' to run commands after the container is created.
+	"postCreateCommand": "mkdocs serve",
+
+	// Comment out connect as root instead. More info: https://aka.ms/vscode-remote/containers/non-root.
+	"remoteUser": "vscode"
+}