Add devcontainer

.devcontainer/Dockerfile

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+ARG VARIANT="bullseye"
+FROM mcr.microsoft.com/vscode/devcontainers/base:${VARIANT}
+
+RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
+    && apt-get -y install --no-install-recommends

.devcontainer/devcontainer.json

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+{
+  "name": "Debian",
+  "build": {
+    "dockerfile": "Dockerfile",
+    "args": { "VARIANT": "bullseye" }
+  },
+	"features": {
+		"ghcr.io/devcontainers/features/github-cli:1": {
+			"installDirectlyFromGitHubRelease": true,
+			"version": "latest"
+		},
+		"ghcr.io/devcontainers/features/python:1": {
+			"installTools": true,
+			"version": "3.10"
+		},
+		"ghcr.io/devcontainers-contrib/features/poetry:2": {
+			"version": "latest"
+		}
+	},
+
+  "customizations": {
+    "vscode": {
+      "extensions": [
+        "ms-azuretools.vscode-docker"
+      ]
+    }
+  },
+
+  "postCreateCommand": ".devcontainer/post-create.sh",
+
+	"remoteUser": "vscode",
+  "containerUser": "vscode"
+}

.devcontainer/post-create.sh

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+#!/bin/bash
+set -eo pipefail
+set -u
+
+pipx install algokit
+pipx upgrade algokit

.editorconfig

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+# top-most EditorConfig file
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+continuation_indent_size = 2
+indent_size = 2
+
+[*.{html,xml}]
+indent_style = spaces
+indent_size = 4
+
+[*.py]
+indent_size = 4
+
+[*.md]
+trim_trailing_whitespace = false

.vscode/extensions.json

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+{
+  // See http://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.
+  // Extension identifier format: ${publisher}.${name}. Example: vscode.csharp
+  // List of extensions which should be recommended for users of this workspace.
+  "recommendations": [
+    "bungcip.better-toml",
+    "charliermarsh.ruff",
+    "editorconfig.editorconfig",
+    "emeraldwalk.runonsave",
+    "esbenp.prettier-vscode",
+    "gitpod.gitpod-desktop",
+    "gitpod.gitpod-remote-ssh",
+    "github.vscode-pull-request-github",
+    "matangover.mypy",
+    "mhutchie.git-graph",
+    "redhat.vscode-xml",
+    "redhat.vscode-yaml",
+    "runarsf.platform-settings",
+    "zainchen.json"
+  ],
+  // List of extensions recommended by VS Code that should not be recommended for users of this workspace.
+  "unwantedRecommendations": []
+}

.vscode/settings.json

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+{
+  "editor.formatOnSave": true,
+}