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docker network create mynet

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docker run -dP \
  --name keycloak-2 \
  --network mynet \
  -e KEYCLOAK_USER=admin \
  -e KEYCLOAK_PASSWORD=admin \
jboss/keycloak:10.0.2

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docker run -dP \
  --name keycloak-2 \
  --network mynet \
  -e KEYCLOAK_USER=admin \
  -e KEYCLOAK_PASSWORD=admin \
jboss/keycloak:10.0.2

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user  nginx;
worker_processes  1;

error_log  /var/log/nginx/error.log warn;
pid        /var/run/nginx.pid;


events {
    worker_connections  1024;
}


http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

    access_log  /var/log/nginx/access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    keepalive_timeout  65;

    #gzip  on;

    #include /etc/nginx/conf.d/*.conf;
    
    upstream keycloak {
        server keycloak-1:8080;
        server keycloak-2:8080;
    }

    server {
        listen 80 default_server;
        listen [::]:80 default_server;


        root /var/www/html;
        index index.html index.htm index.nginx-debian.html;
        #server_name _;

        location / {
             proxy_set_header Host $http_host;
             proxy_set_header X-Real-IP $remote_addr;
             proxy_set_header X-Forwarded-Host $http_host;
             proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
             proxy_set_header X-Forwarded-Proto $scheme;

             proxy_http_version 1.1;
             proxy_set_header Upgrade $http_upgrade;
             proxy_set_header Connection "upgrade";
             proxy_pass http://keycloak;

             client_max_body_size 200M;
        }
    }
}

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docker run --name nginx　\
     --net mynet \
     -p 8080:80 \
     -v ~/nginx.conf:/etc/nginx/nginx.conf \
     -d \
     nginx