Guide to setup the backend for development purposes:

Download the requirements
```
go mod download
go mod tidy
```
Go to Google cloud credential page for generating client id and secret.
Add the Client ID and secret as an environment variable

Sample .env format:

CLIENT_ID="client_ID"
CLIENT_SEC="client_SECRET"
REDIRECT_URL_DEV="http://localhost:8000/auth/callback"
SESSION_KEY=""
# If using Docker
FRONTEND_ORIGIN_DEV="http://localhost"
CONTAINER_ORIGIN="http://YOUR_CONTAINER_NAME:8080/"
# Else if using npm
FRONTEND_ORIGIN_DEV="http://localhost:5173"
CONTAINER_ORIGIN="http://localhost:8080/"

Common pitfall: use the value

FRONTEND_ORIGIN_DEV="http://localhost"
CONTAINER_ORIGIN="http://YOUR_CONTAINER_NAME:8080/"

only while using Docker Container

use

FRONTEND_ORIGIN_DEV="http://localhost:5173"
CONTAINER_ORIGIN="http://localhost:8080/"

if you want to run by npm run dev

Run the application:
```
go mod download
go mod tidy
```

Run the backend container only:

docker-compose build backend
docker-compose up