Add codespace config

.devcontainer/Dockerfile

@@ -0,0 +1,9 @@
+FROM ubuntu:18.04
+
+WORKDIR /home/
+
+COPY . .
+
+RUN bash ./setup.sh
+
+ENV PATH="/root/.cargo/bin:$PATH"

.devcontainer/devcontainer.json

@@ -0,0 +1,23 @@
+{
+  "name": "Codespaces For OpenWorkers Dev Container",
+  "dockerFile": "Dockerfile",
+  "customizations": {
+    "vscode": {
+      "extensions": [
+        "cschleiden.vscode-github-actions",
+        "ms-vsliveshare.vsliveshare",
+        "matklad.rust-analyzer",
+        "serayuzgur.crates",
+        "vadimcn.vscode-lldb"
+      ],
+      "settings": {
+        "editor.formatOnSave": true,
+        "terminal.integrated.shell.linux": "/usr/bin/zsh",
+        "files.exclude": {
+          "**/CODE_OF_CONDUCT.md": true,
+          "**/LICENSE": true
+        }
+      }
+    }
+  }
+}

.devcontainer/setup.sh

@@ -0,0 +1,32 @@
+#!/bin/sh
+
+## update and install some things we should probably have
+apt-get update
+apt-get install -y \
+  curl \
+  git \
+  gnupg2 \
+  jq \
+  sudo \
+  zsh \
+  vim \
+  build-essential \
+  openssl
+
+## Install rustup and common components
+curl https://sh.rustup.rs -sSf | sh -s -- -y 
+rustup install nightly
+rustup component add rustfmt
+rustup component add rustfmt --toolchain nightly
+rustup component add clippy 
+rustup component add clippy --toolchain nightly
+
+cargo install cargo-expand
+cargo install cargo-edit
+
+## setup and install oh-my-zsh
+sh -c "$(curl -fsSL https://raw.githubusercontent.com/robbyrussell/oh-my-zsh/master/tools/install.sh)"
+cp -R /root/.oh-my-zsh /home/$USERNAME
+cp /root/.zshrc /home/$USERNAME
+sed -i -e "s/\/root\/.oh-my-zsh/\/home\/$USERNAME\/.oh-my-zsh/g" /home/$USERNAME/.zshrc
+chown -R $USER_UID:$USER_GID /home/$USERNAME/.oh-my-zsh /home/$USERNAME/.zshrc

.vscode/settings.json

@@ -1,6 +1,7 @@
 {
   "cSpell.words": [
     "actix",
+    "codespaces",
     "customizer",
     "deno",
     "hrtime",