feat(bun): upgrade to bun, reduce docker image size by 95%, upgrade docs & ci (#371)

* migrate to bun

* added envvars to drizzle

* upgrade bun devcontainer feature to a valid one

* added bun, docker not working

* updated envvars, updated to bunder and esnext modules

* fixed build, reinstated otel

* feat: optimized multi-stage docker images

* add coerce for boolean envvar

* feat: add docker-compose configuration for local LLM services and remove legacy Dockerfile and entrypoint script

* feat: add docker-compose files for local and production environments, and implement GitHub Actions for Docker image build and publish

* refactor: remove unused generateStaticParams function from various API routes and maintain dynamic rendering

* cleanup

* upgraded bun

* updated ci

* fixed build

---------

Co-authored-by: Aditya Tripathi <aditya@climactic.co>

.github/CONTRIBUTING.md

@@ -214,9 +214,9 @@ If you prefer not to use Docker or Dev Containers:
    ```
 2. **Install Dependencies:**
 
-   - Using NPM:
+   - Using Bun:
      ```bash
-     npm install
+     bun install
      ```
 
 3. **Set Up Environment:**
@@ -229,14 +229,14 @@ If you prefer not to use Docker or Dev Containers:
    - You need a PostgreSQL instance running
    - Run migrations:
      ```bash
-     npm run db:push
+     bun run db:push
      ```
 
 5. **Run the Development Server:**
 
-   - With NPM:
+   - With Bun:
      ```bash
-     npm run dev
+     bun run dev
      ```
 
 6. **Make Your Changes and Test Locally.**
@@ -248,7 +248,7 @@ When working on email templates, you can preview them using a local email previe
 1. **Run the Email Preview Server:**
 
    ```bash
-   npm run email:dev
+   bun run email:dev
    ```
 
 2. **Access the Preview:**