Add "webUIEnabled" env variable

This is the only setting that can not be changed via the UI

README.md

@@ -47,6 +47,7 @@ There are a number of environment variables available to configure Suwayomi:
 |     **BASIC_AUTH_PASSWORD**      |    `""`    |                                                                                  The password to log in to Suwayomi.                                                                                  |
 |            **DEBUG**             |   `true`   |                                                               If extra logging is enabled. Useful for development and troubleshooting.                                                                |
 |          **GQL_DEBUG**           |  `false`   |                                                If graphql logging is enabled. Useful for development and troubleshooting. Can overload the log output.                                                |
+|        **WEB_UI_ENABLED**        |   `true`   |                                                                                  If the server should serve a webUI                                                                                   |
 |        **WEB_UI_FLAVOR**         | `"WebUI"`  |                                                                                          "WebUI" or "Custom"                                                                                          |
 |        **WEB_UI_CHANNEL**        | `"stable"` |                                        "bundled" (the version bundled with the server release), "stable" or "preview" - the webUI version that should be used                                         |
 |    **WEB_UI_UPDATE_INTERVAL**    |    `23`    |                                          Time in hours - 0 to disable auto update - range: 1 <= n < 24 - how often the server should check for webUI updates                                          |

scripts/startup_script.sh

@@ -26,6 +26,7 @@ sed -i -r "s/server.socksProxyHost = \"(.*)\"/server.socksProxyHost = \"${SOCKS_
 sed -i -r "s/server.socksProxyPort = \"(.*)\"/server.socksProxyPort = \"${SOCKS_PROXY_PORT:-\1}\"/" /home/suwayomi/.local/share/Tachidesk/server.conf
 
 # webUI
+sed -i -r "s/server.webUIEnabled = (.*)/server.webUIEnabled = ${WEB_UI_EABLED:-\1}/" /home/suwayomi/.local/share/Tachidesk/server.conf
 sed -i -r "s/server.webUIFlavor = \"(.*)\"/server.webUIFlavor = \"${WEB_UI_FLAVOR:-\1}\"/" /home/suwayomi/.local/share/Tachidesk/server.conf
 sed -i -r "s/server.webUIChannel = \"(.*)\"/server.webUIChannel = \"${WEB_UI_CHANNEL:-\1}\"/" /home/suwayomi/.local/share/Tachidesk/server.conf
 sed -i -r "s/server.webUIUpdateCheckInterval = (.*)/server.webUIUpdateCheckInterval = ${WEB_UI_UPDATE_INTERVAL:-\1}/" /home/suwayomi/.local/share/Tachidesk/server.conf