🧹: Add docker and devcontainer config

.devcontainer/devcontainer.json

@@ -0,0 +1,16 @@
+{
+  "dockerComposeFile": [
+    "../docker-compose.yml",
+    "./docker-compose.devcontainer.yml"
+  ],
+  "service": "dev",
+  "workspaceFolder": "/dark-pref",
+  "customizations": {
+    "vscode": {
+      "extensions": [
+        "dbaeumer.vscode-eslint",
+        "EditorConfig.EditorConfig"
+      ]
+    }
+  }
+}

.devcontainer/docker-compose.devcontainer.yml

@@ -0,0 +1,4 @@
+version: "3.8"
+services:
+  dev:
+    command: /bin/sh -c "while sleep 1000; do :; done"

.dockerignore

@@ -0,0 +1,4 @@
+Dockerfile
+.dockerignore
+node_modules
+.git

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 ## Unreleased
 
+- chore: Add Docker and devcontainer config
 - chore: Update dependencies
 - chore: Move to eslint flat config and stylistic package
 - chore: Implement list-staged and husky for pre-commit linting

Dockerfile

@@ -0,0 +1,15 @@
+FROM node:20 AS base
+
+FROM base AS deps
+WORKDIR /dark-pref
+COPY package*.json ./
+RUN npm i
+RUN npx playwright install-deps
+RUN npx playwright install
+
+
+# Copy over node modules for dev
+FROM deps AS dev
+WORKDIR /dark-pref
+COPY --from=deps /dark-pref/node_modules ./node_modules
+COPY . .

README.md

@@ -152,3 +152,11 @@ module.exports = {
   //...
 }
 ```
+
+## Docker
+
+Run `docker compose up` to get a working dev environment. This will start a dev server on port 8888.
+
+Run `docker compose run --build dev npm run test` to just run the unit tests in isolation.
+
+There is a config for a vscode devcontainer too. The devcontainer uses the same Dockerfile/docker-compose config but does not start a dev server. Instead open a terminal within vscode and run `npm start` (or `npm run test`, etc).

docker-compose.yml

@@ -0,0 +1,15 @@
+version: "3.8"
+services:
+  dev:
+    build:
+      context: .
+      target: dev
+    restart: always
+    command: npm start
+    environment:
+      - NODE_ENV=development
+    volumes:
+      - .:/dark-pref
+      - /dark-pref/node_modules/
+    ports:
+      - 8888:8888