Docker compose client fails under linux

[capital-G]

webRTCgui/docker-compose.client.yml

Lines 11 to 13 in 59dce5d

	- SC_HOST=${SC_HOST:-host.docker.internal}
	- SC_PORT=${SC_PORT:-57120}
	- BACKEND_ADDRESS=${BACKEND_ADDRESS:-http://host.docker.internal:3000}

host.docker.internal is a macOS/Windows featuer, for linux see https://stackoverflow.com/questions/48546124/what-is-linux-equivalent-of-host-docker-internal

Creating webrtcgui_client_1 ... done
Attaching to webrtcgui_client_1                                                                                                    
client_1  |  
client_1  | > supercollider_web_rtc_gui@0.2.1 client /root/web_rtc_gui 
client_1  | > ts-node --esm src/client.ts 
client_1  |  
client_1  | Start client 
client_1  | Backend address: https://remote.dennis-scheiba.com 
client_1  | SuperCollider address: host.docker.internal:57120 
client_1  | Client port: 57220 
client_1  | Auth token: "somePW" 
client_1  | Started client 
client_1  | Connected to server 
client_1  | Received freq: 113.30357142857143 
client_1  | Received freq: 119.75 
client_1  | Received freq: 132.98214285714286 
client_1  | Received freq: 152.32142857142856 
client_1  | Received freq: 167.92857142857142 
client_1  | Error: getaddrinfo ENOTFOUND host.docker.internal 
client_1  |     at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:71:26) { 
client_1  |   errno: -3008, 
client_1  |   code: 'ENOTFOUND', 
client_1  |   syscall: 'getaddrinfo', 
client_1  |   hostname: 'host.docker.internal' 
client_1  | } 
client_1  | npm ERR! code ELIFECYCLE 
client_1  | npm ERR! errno 1 
client_1  | npm ERR! supercollider_web_rtc_gui@0.2.1 client: `ts-node --esm src/client.ts` 
client_1  | npm ERR! Exit status 1 
client_1  | npm ERR!  
client_1  | npm ERR! Failed at the supercollider_web_rtc_gui@0.2.1 client script. 
client_1  | npm ERR! This is probably not a problem with npm. There is likely additional logging output above. 
client_1  |  
client_1  | npm ERR! A complete log of this run can be found in: 
client_1  | npm ERR!     /root/.npm/_logs/2022-12-15T16_03_32_530Z-debug.log 
webrtcgui_client_1 exited with code 1