Update environment-variables.mdx (#2750)

Author: vasfvitor

src/content/docs/reference/environment-variables.mdx

@@ -23,6 +23,8 @@ If both environment variable and CLI flag are used, the CLI flag will have prior
 - `TAURI_CLI_NO_DEV_SERVER_WAIT` — Skip waiting for the frontend dev server to start before building the tauri application.
 - `TAURI_LINUX_AYATANA_APPINDICATOR` — Set this var to `true` or `1` to force usage of `libayatana-appindicator` for system tray on Linux.
 - `TAURI_BUNDLER_WIX_FIPS_COMPLIANT` — Specify the bundler's WiX `FipsCompliant` option.
+- `TAURI_BUNDLER_TOOLS_GITHUB_MIRROR` - Specify a GitHub mirror to download files and tools used by tauri bundler.
+- `TAURI_BUNDLER_TOOLS_GITHUB_MIRROR_TEMPLATE` - Specify a GitHub mirror template to download files and tools used by tauri bundler, for example: `https://mirror.example.com/<owner>/<repo>/releases/download/<version>/<asset>`.
 - `TAURI_SKIP_SIDECAR_SIGNATURE_CHECK` - Skip signing sidecars.
 - `TAURI_SIGNING_PRIVATE_KEY` — Private key used to sign your app bundles, can be either a string or a path to the file.
 - `TAURI_SIGNING_PRIVATE_KEY_PASSWORD` — The signing private key password, see `TAURI_SIGNING_PRIVATE_KEY`.
@@ -38,8 +40,8 @@ If both environment variable and CLI flag are used, the CLI flag will have prior
   - See [creating API keys](https://developer.apple.com/documentation/appstoreconnectapi/creating_api_keys_for_app_store_connect_api) for more information.
 - `API_PRIVATE_KEYS_DIR` — Specify the directory where your AuthKey file is located. See `APPLE_API_KEY`.
 - `APPLE_API_ISSUER` — Issuer ID. Required if `APPLE_API_KEY` is specified.
-- `APPLE_API_KEY_PATH` - path to the API key `.p8` file. If not specified, the bundler searches the following directories in sequence for a private key file with the name of 'AuthKey\_\<api_key>.p8': './private_keys', '\~/private_keys', '\~/.private_keys', and '\~/.appstoreconnect/private_keys'. **For iOS this variable is required**.
-- `APPLE_SIGNING_IDENTITY` — The identity used to code sign. Overwrites `tauri.conf.json > bundle > macOS > signingIdentity`.
+- `APPLE_API_KEY_PATH` - path to the API key `.p8` file. If not specified, for macOS apps the bundler searches the following directories in sequence for a private key file with the name of 'AuthKey\_\<api_key>.p8': './private_keys', '~/private_keys', '~/.private_keys', and '~/.appstoreconnect/private_keys'. **For iOS this variable is required**.
+- `APPLE_SIGNING_IDENTITY` — The identity used to code sign. Overwrites `tauri.conf.json > bundle > macOS > signingIdentity`. If neither are set, it is inferred from `APPLE_CERTIFICATE` when provided.
 - `APPLE_PROVIDER_SHORT_NAME` — If your Apple ID is connected to multiple teams, you have to specify the provider short name of the team you want to use to notarize your app. Overwrites `tauri.conf.json > bundle > macOS > providerShortName`.
 - `APPLE_DEVELOPMENT_TEAM` — The team ID used to code sign on iOS. Overwrites `tauri.conf.json > bundle > iOS > developmentTeam`. Can be found in https://developer.apple.com/account#MembershipDetailsCard.
 - `TAURI_WEBVIEW_AUTOMATION` — Enables webview automation (Linux Only).