chore: add devcontainer for codespaces/etc

.devcontainer/Dockerfile

@@ -0,0 +1,14 @@
+FROM mcr.microsoft.com/vscode/devcontainers/go:1.15
+
+# Install Bazel
+ARG BAZEL_VERSION=3.5.0
+ARG BAZEL_DOWNLOAD_SHA=dev-mode
+RUN curl -fSsL -o /tmp/bazel-installer.sh https://github.com/bazelbuild/bazel/releases/download/${BAZEL_VERSION}/bazel-${BAZEL_VERSION}-installer-linux-x86_64.sh \
+  && ([ "${BAZEL_DOWNLOAD_SHA}" = "dev-mode" ] || echo "${BAZEL_DOWNLOAD_SHA} */tmp/bazel-installer.sh" | sha256sum --check - ) \
+  && /bin/bash /tmp/bazel-installer.sh --base=/usr/local/bazel \
+  && rm /tmp/bazel-installer.sh
+
+# Install Node.js
+ARG INSTALL_NODE="true"
+ARG NODE_VERSION="lts/*"
+RUN if [ "${INSTALL_NODE}" = "true" ]; then su vscode -c "source /usr/local/share/nvm/nvm.sh && nvm install ${NODE_VERSION} 2>&1"; fi

.devcontainer/devcontainer.json

@@ -0,0 +1,34 @@
+{
+  "name": "Roleypoly (Bazel, Go, Node)",
+  "build": {
+    "dockerfile": "Dockerfile",
+    "args": {
+      "BAZEL_VERSION": "3.5.0",
+    }
+  },
+  // Set *default* container specific settings.json values on container create.
+  "settings": {
+    "terminal.integrated.shell.linux": "/bin/bash"
+  },
+  // Add the IDs of extensions you want installed when the container is created.
+  "extensions": [
+    "bazelbuild.vscode-bazel",
+    "dbaeumer.vscode-eslint",
+    "golang.go",
+    "hashicorp.terraform",
+    "firsttris.vscode-jest-runner",
+    "esbenp.prettier-vscode",
+    "zxh404.vscode-proto3",
+    "jpoissonnier.vscode-styled-components",
+    "eg2.vscode-npm-script",
+    "christian-kohler.npm-intellisense"
+  ]
+  // Use 'forwardPorts' to make a list of ports inside the container available locally.
+  // "forwardPorts": [],
+  // Use 'postCreateCommand' to run commands after the container is created.
+  // "postCreateCommand": "uname -a",
+  // Uncomment when using a ptrace-based debugger like C++, Go, and Rust
+  // "runArgs": [ "--cap-add=SYS_PTRACE", "--security-opt", "seccomp=unconfined" ],
+  // Uncomment to connect as a non-root user. See https://aka.ms/vscode-remote/containers/non-root.
+  // "remoteUser": "vscode"
+}