Invalid port in upstream

[Tesfa1074]

Describe the bug
I am having the following issue using the relay proxy after configuration.

Error

10 October 2024 at 10:48 (UTC+2:00) | 2024/10/10 08:48:50 [error] 37#37: *209 invalid port in upstream "https://manager.us.smartlook.cloud", client: 10.100.22.225, server: , request: "POST /manager/rec/setup-recording/website HTTP/1.1", host: "<proxy-host>:8585", referrer: "https://<custom-domain>/" | a22c36a3aa8442f78f5e329affacefcd | worker
-- | -- | -- | --
10 October 2024 at 10:48 (UTC+2:00) | 10.100.22.225 - - [10/Oct/2024:08:48:50 +0000] "POST /manager/rec/setup-recording/website HTTP/1.1" 500 572 "<custom-domain>" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36"

10 October 2024 at 10:48 (UTC+2:00)
2024/10/10 08:48:50 [error] 37#37: *209 invalid port in upstream "https://manager.us.smartlook.cloud", client: 10.100.22.225, server: , request: "POST /manager/rec/setup-recording/website HTTP/1.1", host: "<proxy-host>:8585", referrer: "<custom-domain>"

10 October 2024 at 10:48 (UTC+2:00)
10.100.22.225 - - [10/Oct/2024:08:48:50 +0000] "POST /manager/rec/setup-recording/website HTTP/1.1" 500 572 "<custom-domain>" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36"

Proxy is running on AWS ECS.

To Reproduce
Docker config for my ECS

FROM nginx:1-alpine

ARG COMMIT_SHA="unknown"

COPY ./nginx/templates /etc/nginx/templates
COPY --chmod=0555 ./nginx/entrypoint.sh /docker-entrypoint.d/40-smartlook-relay-proxy.sh

ENV COMMIT_SHA=${COMMIT_SHA}
ENV PROXY_PORT=8000
ENV CLIENT_MAX_BODY_SIZE=20m
ENV ERROR_LOG_LEVEL=error
ENV WEB_SDK_HOST=web-sdk.smartlook.com
ENV MANAGER_HOST=manager.us.smartlook.cloud
ENV ASSETS_PROXY_HOST=assets-proxy.smartlook.cloud
ENV WEB_SDK_WRITER_HOST=web-writer.us.smartlook.cloud
ENV MOBILE_SDK_WRITER_HOST=sdk-writer.us.smartlook.cloud

EXPOSE ${PROXY_PORT}

NGINX Config

map $status $loggable {
    ~^[23]  0;
    default 1;
}

server {
    listen ${PROXY_PORT};
    
    proxy_cache off;
    proxy_ssl_server_name on;
    proxy_ssl_protocols TLSv1 TLSv1.1 TLSv1.2;

    server_tokens off;
    client_max_body_size ${CLIENT_MAX_BODY_SIZE};

    error_log /dev/stderr ${ERROR_LOG_LEVEL};
    access_log /dev/stdout combined if=$loggable;

    location /proxy/status {
        default_type application/json;

        return 200 '{ "app": "smartlook-relay-proxy", "version": "${COMMIT_SHA}" }';
    }

    set $manager_host ${MANAGER_HOST};
    set $assets_proxy_host ${ASSETS_PROXY_HOST};
    set $web_sdk_writer_host ${WEB_SDK_WRITER_HOST};
    set $mobile_sdk_writer_host ${MOBILE_SDK_WRITER_HOST};
    set $web_sdk_host ${WEB_SDK_HOST};

    proxy_pass_header Server;

    resolver 1.1.1.1 1.0.0.1 valid=5m;

    location /manager/ {
        rewrite ^/manager(/.*)$ $1 break;
        proxy_pass https://$manager_host;

        proxy_set_header Host $manager_host;
        proxy_set_header X-Forwarded-Host $manager_host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_set_header X-Forwarded-By smartlook-relay-proxy;
    }

    location /assets/ {
        rewrite ^/assets(/.*)$ $1 break;
        proxy_pass https://$assets_proxy_host;

        proxy_set_header Host $assets_proxy_host;
        proxy_set_header X-Forwarded-Host $assets_proxy_host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_set_header X-Forwarded-By smartlook-relay-proxy;
    }

    location /web-writer/ {
        rewrite ^/web-writer(/.*)$ $1 break;
        proxy_pass https://$web_sdk_writer_host;

        proxy_set_header Host $web_sdk_writer_host;
        proxy_set_header X-Forwarded-Host $web_sdk_writer_host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_set_header X-Forwarded-By smartlook-relay-proxy;
    }

    location /sdk-writer/ {
        rewrite ^/sdk-writer(/.*)$ $1 break;
        proxy_pass https://$mobile_sdk_writer_host;

        proxy_set_header Host $mobile_sdk_writer_host;
        proxy_set_header X-Forwarded-Host $mobile_sdk_writer_host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_set_header X-Forwarded-By smartlook-relay-proxy;
    }

    location / {
        proxy_pass https://$web_sdk_host;

        proxy_set_header Host $web_sdk_host;
        proxy_set_header X-Forwarded-Host $web_sdk_host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_set_header X-Forwarded-By smartlook-relay-proxy;
    }
}

Desktop (please complete the following information):

• OS: Any
• Browser: Chrome
• Version: Any