https://github.com/mattermost/focalboard

docker  run  --user 1011:1011 -it -p 3001:8000  -d    --restart=always \
    -v /ssd2/springCloudProd/conf/focalboard/config.json:/opt/focalboard/config.json  \
    -v /ssd2/springCloudProd/data/focalboard:/opt/focalboard/data \
    mattermost/focalboard:7.10.6

                location /task/ {
                       client_max_body_size 50M;
                        proxy_set_header Upgrade $http_upgrade;
                       proxy_set_header Connection "upgrade";
                       #proxy_set_header Connection "";
                       proxy_set_header Host $http_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-Frame-Options SAMEORIGIN;
                       proxy_buffers 256 16k;
                       proxy_buffer_size 16k;
                       proxy_read_timeout 600s;
                       proxy_cache_revalidate on;
                       proxy_cache_min_uses 2;
                       proxy_cache_use_stale timeout;
                       proxy_cache_lock on;
                       proxy_http_version 1.1;
                       proxy_pass http://localhost:8000/;
                }