I have laravel image defined with Dockerfile like so...

FROM php:7.2-fpm

# Copy composer.lock and composer.json
COPY composer.lock composer.json /var/www/

# Set working directory
WORKDIR /var/www

# Install dependencies
RUN apt-get update -y && apt-get install -y openssl zip unzip git libpng-dev

# Install extensions
RUN docker-php-ext-install gd

# Install composer
RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer

# Add user for laravel application
RUN groupadd -g 1000 www
RUN useradd -u 1000 -ms /bin/bash -g www www

# Copy existing application directory contents
COPY . /var/www

# Copy existing application directory permissions
COPY --chown=www:www . /var/www

# Change current user to www
USER www

# Expose port 8181 and start php-fpm server
EXPOSE 8181
CMD ["php-fpm"]

I have nginx ingress installed with helm like so...

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: ingress-resource
  annotations:
    kubernetes.io/ingress.class: "nginx"
    nginx.ingress.kubernetes.io/proxy-body-size: 10m
    ingress.kubernetes.io/affinity: "cookie"
    nginx.ingress.kubernetes.io/load-balancer: "ip-hash"
spec:
  tls:
    - hosts:
      - api.myweb.com
      - www.myweb.com
      secretName: secret
  rules:
  - host: api.myweb.com
    http:
      paths:
      - backend:
          serviceName: backend-golang
          servicePort: 8080
  - host: www.myweb.com
    http:
      paths:
      - backend:
          serviceName: frontend-laravel
          servicePort: 8181

With this configuration, it return 502 Bad Gateway when I access www.myweb.com

Should I tell nginx that root folder was at /var/www/public..?? How do I do that?

Should I tell nginx that index file was at index.php..?? How do I do that?

My reference was this https://www.digitalocean.com/community/tutorials/how-to-set-up-laravel-nginx-and-mysql-with-docker-compose. But I don't want to use custom nginx,, instead I want to use nginx ingress from helm..

Thank you...