fix: Update nginx config to use dynamic DNS resolution

- Replace upstream blocks with resolver directive
- Use variables for backend addresses to avoid startup errors
- Simplify configuration with single server block
- Add health check endpoint

server/api/node_modules/jest-changed-files/README.md

@@ -0,0 +1,95 @@
+# jest-changed-files
+
+A module used internally by Jest to check which files have changed since you last committed in git or hg.
+
+## Install
+
+```sh
+$ npm install --save jest-changed-files
+```
+
+## API
+
+### `getChangedFilesForRoots(roots: Array<string>, options: Options): Promise<ChangedFiles>`
+
+Get the list of files and repos that have changed since the last commit.
+
+#### Parameters
+
+roots: Array of string paths gathered from [jest roots](https://jestjs.io/docs/configuration#roots-arraystring).
+
+options: Object literal with keys
+
+- lastCommit: boolean
+- withAncestor: boolean
+- changedSince: string
+
+### Returns
+
+A Promise of Object literal with keys
+
+- changedFiles: Set\<string>
+- repos:
+  - git: Set\<string>
+  - hg: Set\<string>
+
+### findRepos(roots: Array<string>): Promise<Repos>
+
+Get a set of git and hg repositories.
+
+#### Parameters
+
+roots: Array of string paths gathered from [jest roots](https://jestjs.io/docs/configuration#roots-arraystring).
+
+### Returns
+
+A Promise of Object literal with keys
+
+- git: Set\<string>
+- hg: Set\<string>
+
+## Usage
+
+```javascript
+import {getChangedFilesForRoots} from 'jest-changed-files';
+
+getChangedFilesForRoots(['/path/to/test'], {
+  lastCommit: true,
+  withAncestor: true,
+}).then(files => {
+  /*
+  {
+    repos: [],
+    changedFiles: []
+  }
+  */
+});
+```
+
+```javascript
+import {getChangedFilesForRoots} from 'jest-changed-files';
+
+getChangedFilesForRoots(['/path/to/test'], {
+  changedSince: 'main',
+}).then(files => {
+  /*
+  {
+    repos: [],
+    changedFiles: []
+  }
+  */
+});
+```
+
+```javascript
+import {findRepos} from 'jest-changed-files';
+
+findRepos(['/path/to/test']).then(repos => {
+  /*
+  {
+    git: Set<Path>,
+    hg: Set<Path>
+  }
+  */
+});
+```