update Dockerfile for Docusaurus to use tini

.eslintrc.js

@@ -102,8 +102,10 @@ module.exports = {
       ],
       plugins: ['react', 'react-hooks'],
       rules: {
+        // https://github.com/facebook/docusaurus/blob/main/.eslintrc.js#L122
+        // Ignore certain webpack aliases because they can't be resolved
         'import/no-unresolved': [
-          'off',
+          'error',
           {
             ignore: ['^@theme', '^@docusaurus', '^@generated', '^@site'],
           },
@@ -112,20 +114,19 @@ module.exports = {
         'no-use-before-define': 'off',
         'node/no-missing-import': 'off',
         'node/no-unsupported-features/es-syntax': 'off',
-        'react/jsx-filename-extension': [1, { extensions: ['.js', '.jsx'] }],
+        'react/jsx-filename-extension': ['off', { extensions: ['.js', '.jsx'] }],
+        // https://github.com/facebook/docusaurus/blob/main/.eslintrc.js#L154
+        // We build a static site, and nearly all components don't change.
         'react/no-array-index-key': 'off',
         'react/prop-types': 'off',
       },
       settings: {
         'import/resolver': {
           node: {
             extensions: ['.js', '.jsx', '.ts', '.tsx'],
-            moduleDirectory: ['src/docs/node_modules', 'src/docs/'],
+            moduleDirectory: ['src/docs/node_modules', 'src/docs/src'],
           },
         },
-        react: {
-          version: '17.0',
-        },
       },
     },
   ],

src/docs/Dockerfile

@@ -30,17 +30,14 @@ CMD ["npm", "run", "start"]
 # Also define a production target which doesn't use devDeps
 FROM base as production
 WORKDIR /home/node/app
-# We'll install production only deps, and target the Linux Musl x64 for alpine.
-RUN npm install --platform=linuxmusl --arch=x64 --production
+# We'll install production only deps
+RUN npm install --production
 
 ## Deploy ######################################################################
 # Use a smaller node image (-alpine) at runtime
 FROM node:lts-alpine as deploy
-# Install dumb-init, see:
-# https://snyk.io/blog/10-best-practices-to-containerize-nodejs-web-applications-with-docker/
-# Install specific version, and don't cache https://github.com/hadolint/hadolint/wiki/DL3018
-# https://pkgs.alpinelinux.org/package/edge/community/x86/dumb-init
-RUN apk --no-cache add dumb-init=1.2.5-r1
+# https://github.com/krallin/tini
+RUN apk --no-cache add tini
 WORKDIR /home/node/app
 # Copy what we've installed/built from production
 COPY --chown=node:node --from=production /home/node/app/node_modules /home/node/app/node_modules/
@@ -49,4 +46,4 @@ COPY --chown=node:node . /home/node/app/
 # Switch to the node user vs. root
 USER node
 # Start the app
-CMD ["dumb-init", "npm", "run", "build"]
+CMD ["tini", "npm", "run", "build"]