feat: add .devcontainer

.devcontainer/Dockerfile

@@ -0,0 +1,9 @@
+FROM --platform=linux/amd64 mcr.microsoft.com/vscode/devcontainers/base:0-bullseye
+
+ENV DENO_INSTALL=/deno
+RUN mkdir -p /deno \
+    && curl -fsSL https://deno.land/x/install/install.sh | sh \
+    && chown -R vscode /deno
+
+ENV PATH=${DENO_INSTALL}/bin:${PATH} \
+    DENO_DIR=${DENO_INSTALL}/.cache/deno

.devcontainer/devcontainer.json

@@ -0,0 +1,12 @@
+{
+  "name": "Deno",
+  "build": {
+    "dockerfile": "Dockerfile"
+  },
+  "customizations": {
+    "vscode": {
+      "extensions": ["denoland.vscode-deno"]
+    }
+  },
+  "remoteUser": "vscode"
+}