diff --git a/.github/workflows/flutter-nightly.yml b/.github/workflows/flutter-nightly.yml
index 845ba339b..112cb53ad 100644
--- a/.github/workflows/flutter-nightly.yml
+++ b/.github/workflows/flutter-nightly.yml
@@ -15,6 +15,11 @@ env:
   # for multiarch gcc compatibility
   VCPKG_COMMIT_ID: "14e7bb4ae24616ec54ff6b2f6ef4e8659434ea44"
   VERSION: "1.2.0"
+  # To make a custom build with your own servers set the below secret values
+  RS_PUB_KEY_VAL: '${{ secrets.RS_PUB_KEY_VAL }}'
+  RENDEZVOUS_SERVER1: '${{ secrets.RENDEZVOUS_SERVER1 }}'
+  RENDEZVOUS_SERVER2: '${{ secrets.RENDEZVOUS_SERVER2 }}'
+  RENDEZVOUS_SERVER3: '${{ secrets.RENDEZVOUS_SERVER3 }}'
 
 jobs:
   build-for-windows:
@@ -150,6 +155,7 @@ jobs:
         uses: actions/checkout@v3
 
       - name: Import the codesign cert
+        if: ${{ env.MACOS_P12_BASE64== 'true' }}
         uses: apple-actions/import-codesign-certs@v1
         with: 
           p12-file-base64: ${{ secrets.MACOS_P12_BASE64 }}
@@ -157,11 +163,13 @@ jobs:
           keychain: rustdesk
       
       - name: Check sign and import sign key
+        if: ${{ env.MACOS_P12_BASE64== 'true' }}
         run: |
           security default-keychain -s rustdesk.keychain
           security find-identity -v
 
       - name: Import notarize key
+        if: ${{ env.MACOS_P12_BASE64== 'true' }}
         uses: timheuer/base64-to-file@v1.2
         with:
           # https://gregoryszorc.com/docs/apple-codesign/stable/apple_codesign_rcodesign.html#notarizing-and-stapling
@@ -170,6 +178,7 @@ jobs:
           encodedString: ${{ secrets.MACOS_NOTARIZE_JSON }}
           
       - name: Install rcodesign tool
+        if: ${{ env.MACOS_P12_BASE64== 'true' }}
         shell: bash
         run: | 
           pushd /tmp
@@ -240,6 +249,7 @@ jobs:
           ./build.py --flutter ${{ matrix.job.extra-build-args }}
 
       - name: Codesign app and create signed dmg
+        if: ${{ env.MACOS_P12_BASE64== 'true' }}
         run: |
           security default-keychain -s rustdesk.keychain
           security unlock-keychain -p ${{ secrets.MACOS_P12_PASSWORD }} rustdesk.keychain
@@ -552,6 +562,7 @@ jobs:
       
       - uses: r0adkll/sign-android-release@v1
         name: Sign app APK
+        if: ${{ env.ANDROID_SIGNING_KEY== 'true' }}
         id: sign-rustdesk
         with:
           releaseDirectory: ./signed-apk
@@ -564,12 +575,14 @@ jobs:
           BUILD_TOOLS_VERSION: "30.0.2"
 
       - name: Upload Artifacts
+        if: ${{ env.ANDROID_SIGNING_KEY== 'true' }}
         uses: actions/upload-artifact@master
         with:
           name: rustdesk-${{ env.VERSION }}-${{ matrix.job.target }}-release-signed.apk
           path: ${{steps.sign-rustdesk.outputs.signedReleaseFile}}
 
-      - name: Publish apk package
+      - name: Publish signed apk package
+        if: ${{ env.ANDROID_SIGNING_KEY== 'true' }}
         uses: softprops/action-gh-release@v1
         with:
           prerelease: true
@@ -577,6 +590,15 @@ jobs:
           files: |
             ${{steps.sign-rustdesk.outputs.signedReleaseFile}}
 
+      - name: Publish unsigned apk package
+        if: ${{ env.ANDROID_SIGNING_KEY!= 'true' }}
+        uses: softprops/action-gh-release@v1
+        with:
+          prerelease: true
+          tag_name: ${{ env.TAG_NAME }}
+          files: |
+            ../rustdesk-${{ env.VERSION }}-${{ matrix.job.target }}-release.apk
+
   build-rustdesk-lib-linux-amd64:
     needs: [generate-bridge-linux, build-vcpkg-deps-linux]
     name: build-rust-lib ${{ matrix.job.target }} (${{ matrix.job.os }}) [${{ matrix.job.extra-build-features }}]
diff --git a/libs/hbb_common/src/config.rs b/libs/hbb_common/src/config.rs
index 1d427a2e9..d819c816d 100644
--- a/libs/hbb_common/src/config.rs
+++ b/libs/hbb_common/src/config.rs
@@ -77,12 +77,20 @@ const CHARS: &'static [char] = &[
     'm', 'n', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
 ];
 
-pub const RENDEZVOUS_SERVERS: &'static [&'static str] = &[
-    "rs-ny.rustdesk.com",
-    "rs-sg.rustdesk.com",
-    "rs-cn.rustdesk.com",
-];
-pub const RS_PUB_KEY: &'static str = "OeVuKk5nlHiXp+APNn0Y3pC1Iwpwn44JGqrQCsWqmBw=";
+//check for env variable RENDEZVOUS_SERVER if not use the default
+pub const RENDEZVOUS_SERVERS: [&'static str;3] = 
+    match option_env!("RENDEZVOUS_SERVER") {
+        Some(key) => [key, key, key],
+        None => ["rs-ny.rustdesk.com","rs-sg.rustdesk.com","rs-cn.rustdesk.com"],
+    };
+
+pub const RS_DEF_PUB_KEY: &'static str = "OeVuKk5nlHiXp+APNn0Y3pC1Iwpwn44JGqrQCsWqmBw=";
+//check for env variable RS_PUB_KEY if not use default
+pub const RS_PUB_KEY: &'static str = match option_env!("RS_PUB_KEY_VAL") {
+    Some(key) => key,
+    None => RS_DEF_PUB_KEY,
+};
+
 pub const RENDEZVOUS_PORT: i32 = 21116;
 pub const RELAY_PORT: i32 = 21117;
 
diff --git a/src/ui_interface.rs b/src/ui_interface.rs
index 9984198b8..ef26534cf 100644
--- a/src/ui_interface.rs
+++ b/src/ui_interface.rs
@@ -243,7 +243,11 @@ pub fn set_peer_option(id: String, name: String, value: String) {
 
 #[inline]
 pub fn using_public_server() -> bool {
-    crate::get_custom_rendezvous_server(get_option_("custom-rendezvous-server")).is_empty()
+    if hbb_common::config::RS_PUB_KEY == hbb_common::config::RS_DEF_PUB_KEY {
+        return true
+    } else {
+        return false
+    }
 }
 
 #[inline]