Not working "--observatory" on MacOS/Darwin with Docker

[urajio]

$ docker run --rm -it --name htrace.sh htrace.sh -u https://nmap.org --observatory

 htrace.sh v1.1.2  (openssl 1.1.1a: ok)

URI: https://nmap.org

     - request-method: GET

req  time_total   time_connect    local_socket           via              remote_socket         geo   proto   ver   code     next_hop
---  ----------   ------------    ------------           ---              -------------         ---   -----   ---   ----     --------

• 1 1.664089 1.664089 172.17.0.2:55862 213.87.104.168 45.33.49.119:443 https 1.1 200

Mozilla Observatory (https://observatory.mozilla.org)

 ▸ https://nmap.org

     › env: ‘node’: No such file or directory
     › env: ‘node’: No such file or directory
     › env: ‘node’: No such file or directory
     › env: ‘node’: No such file or directory
     › env: ‘node’: No such file or directory

[trimstray]

Fixed: #65