Implement backend API and database services in Docker setup

- Added a new `api` service for the NestJS backend, including health checks and dependencies on PostgreSQL, Redis, and MinIO.
- Introduced PostgreSQL and Redis services with health checks and configurations for data persistence.
- Added MinIO for S3-compatible object storage and a one-shot service to initialize required buckets.
- Updated the Nginx configuration to proxy requests to the new backend API and MinIO storage.
- Enhanced the Dockerfile to support the new API environment variables and configurations.
- Updated the `package.json` and `package-lock.json` to include new dependencies for QR code generation and other utilities.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/commitlint.config.js

@@ -0,0 +1,29 @@
+// from https://github.com/arvinxx/gitmoji-commit-workflow/tree/master/packages/gitmoji-regex
+const isGitmoji = (commit) =>
+  commit.match(
+    /^(?::\w*:|(?:\ud83c[\udf00-\udfff])|(?:\ud83d[\udc00-\ude4f\ude80-\udeff])|[\u2600-\u2B55]|♻️|🥅|🧱|🤡|🏷️|🚧|♻️|✏️|⚡️|🔥|⬆️|⏪|🦺|🗃️)\s(?<type>\w*)(?:\((?<scope>.*)\))?!?:\s(?<subject>(?:(?!#).)*(?:(?!\s).))(?:\s\(?(?<ticket>#\d*)\)?)?$/gm,
+  );
+const isConventional = (commit) =>
+  commit.match(
+    /^(feat|fix|docs|style|refactor|perf|test|build|ci|chore|revert|merge)(\(.+\))?:\s/,
+  );
+
+module.exports = {
+  extends: ['@commitlint/config-conventional', 'gitmoji'],
+  rules: {
+    'subject-empty': () => {
+      const commitMsg = process.env.COMMIT_MSG || '';
+      return isGitmoji(commitMsg) ? [0, 'always'] : [2, 'never'];
+    },
+    'type-empty': () => {
+      const commitMsg = process.env.COMMIT_MSG || '';
+      return isGitmoji(commitMsg) ? [0, 'always'] : [2, 'never'];
+    },
+    'start-with-gitmoji': () => {
+      const commitMsg = process.env.COMMIT_MSG || '';
+      return isGitmoji(commitMsg) && !isConventional(commitMsg)
+        ? [2, 'never']
+        : [0, 'always'];
+    },
+  },
+};