diff --git a/.github/workflows/cd_dev.yml b/.github/workflows/cd_dev.yml
index d90d0fb..e0e6a25 100644
--- a/.github/workflows/cd_dev.yml
+++ b/.github/workflows/cd_dev.yml
@@ -71,6 +71,7 @@ jobs:
         uses: subosito/flutter-action@v2
         with:
           channel: "stable"
+          flutter-version: '3.10.0'
 
       - name: Prepare flutter project
         run: | 
diff --git a/.github/workflows/cd_prod.yml b/.github/workflows/cd_prod.yml
index 9ff3d6e..9e45644 100644
--- a/.github/workflows/cd_prod.yml
+++ b/.github/workflows/cd_prod.yml
@@ -73,6 +73,7 @@ jobs:
         uses: subosito/flutter-action@v2
         with:
           channel: "stable"
+          flutter-version: '3.10.0'
 
       - name: Prepare flutter project
         run: |
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e8956f6..9022170 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,18 +12,12 @@ on:
     branches: ["main"]
 
 jobs:
-  build:
+  analyze_and_test:
+    name: Analyze & test
     runs-on: macos-11
     timeout-minutes: 10
 
     steps:
-      - uses: shaunco/ssh-agent@git-repo-mapping
-        with:
-          ssh-private-key: |
-            ${{ secrets.M3_LIGHTMETER_IAP_KEY }}
-          repo-mappings: |
-            github.com/vodemn/m3_lightmeter_iap
-
       - uses: actions/checkout@v3
         with:
           submodules: recursive
@@ -31,23 +25,13 @@ jobs:
       - uses: subosito/flutter-action@v2
         with:
           channel: "stable"
+          flutter-version: '3.10.0'
 
-      - name: Check flutter version
-        run: flutter --version
-
-      - name: Install dependencies
-        run: flutter pub get
-
-      - name: Generate intl
-        run: flutter pub run intl_utils:generate
-
-      - name: Restore firebase_options.dart
-        env:
-          FIREBASE_OPTIONS: ${{ secrets.FIREBASE_OPTIONS }}
+      - name: Prepare flutter project
         run: |
-          FIREBASE_OPTIONS_PATH=$RUNNER_TEMP/firebase_options.dart
-          echo -n "$FIREBASE_OPTIONS" | base64 --decode --output $FIREBASE_OPTIONS_PATH
-          cp $FIREBASE_OPTIONS_PATH ./lib
+          flutter --version
+          flutter pub get
+          flutter pub run intl_utils:generate
 
       - name: Analyze project source
         run: flutter analyze lib --fatal-infos
diff --git a/README.md b/README.md
index 0b4dae8..2fef498 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@
 - [Table of contents](#table-of-contents)
 - [Backstory](#backstory)
 - [Screenshots](#screenshots)
-- [Build](#build)
+- [Development](#development)
 - [Contribution](#contribution)
 - [iOS Limitations](#ios-limitations)
 
@@ -27,22 +27,46 @@ Without further delay behold my new Lightmeter app inspired by Material You (a.k
   <img src="https://lh3.googleusercontent.com/15g_SPV8knDLFbz1_-wGNJFsJeyVWZ_y--TGHpk75MaaIdMDyTXY2_TL-Aw8bpOhpw" width="18.8%" />
 </p>
 
-# Build
+# Development
 
-As part of this project is private, you will be able to run this app from the _main_dev.dart_ file (i.e. --flavor dev). Also to avoid fatal errors the _main_prod.dart_ file is excluded from analysis.
+### 1. Install Flutter
+
+To build this app you need to install Flutter 3.10.0 stable. [How to install](https://docs.flutter.dev/get-started/install).
+
+### 2. (Optional) Install Firebase
+
+Out of the box Firebase Crashlytics won't work. If you want to add Crashlytics to your local build please follow [this guide](https://firebase.google.com/docs/flutter/setup).
+
+### 3. Get packages
+
+Fetch all the neccessary dependencies and generate translation files by running the following commands:
+```console
+flutter pub get
+flutter pub run intl_utils:generate
+```
+
+### 4. Build
+
+You can build an apk by running the following command from the root of the repository:
+```console
+flutter build apk --release --flavor $FLAVOR --dart-define cameraPreviewAspectRatio=2/3 -t lib/main_$FLAVOR.dart
+```
+Just replace `$FLAVOR` with `dev` or `prod`.
 
 # Contribution
 
 To report a bug or suggest a new feature open a new [issue](https://github.com/vodemn/m3_lightmeter/issues).
 
-In case you want to help develop this project you need to follow this [style guide](doc/style_guide.md).
+In case you want to help develop this project feel free to open a Pull Request, but you need to follow this [style guide](doc/style_guide.md).
 
 # iOS Limitations
 
 A list of features, that Android version of the app has and that iOS does not.
 
 ## Incident light metering
+
 Apple does not provide API for reading Lux stream form the ambient light sensor. Lux can be calculated based on front camera image stream, but this would be a reflected light. So there is no way incident light metering can be implemented on iOS.
 
 ## Volume buttons action
+
 This can be [implemented](https://stackoverflow.com/questions/70161271/ios-override-hardware-volume-buttons-same-as-zello) but the app will be rejected due to [2.5.9](https://developer.apple.com/app-store/review/guidelines/#software-requirements)
\ No newline at end of file
diff --git a/lib/firebase_options.dart b/lib/firebase_options.dart
new file mode 100644
index 0000000..a8a32c7
--- /dev/null
+++ b/lib/firebase_options.dart
@@ -0,0 +1,68 @@
+// File generated by FlutterFire CLI.
+// ignore_for_file: lines_longer_than_80_chars, avoid_classes_with_only_static_members
+import 'package:firebase_core/firebase_core.dart' show FirebaseOptions;
+import 'package:flutter/foundation.dart' show defaultTargetPlatform, kIsWeb, TargetPlatform;
+
+/// Default [FirebaseOptions] for use with your Firebase apps.
+///
+/// Example:
+/// ```dart
+/// import 'firebase_options.dart';
+/// // ...
+/// await Firebase.initializeApp(
+///   options: DefaultFirebaseOptions.currentPlatform,
+/// );
+/// ```
+class DefaultFirebaseOptions {
+  static FirebaseOptions get currentPlatform {
+    if (kIsWeb) {
+      throw UnsupportedError(
+        'DefaultFirebaseOptions have not been configured for web - '
+        'you can reconfigure this by running the FlutterFire CLI again.',
+      );
+    }
+    switch (defaultTargetPlatform) {
+      case TargetPlatform.android:
+        return android;
+      case TargetPlatform.iOS:
+        return ios;
+      case TargetPlatform.macOS:
+        throw UnsupportedError(
+          'DefaultFirebaseOptions have not been configured for macos - '
+          'you can reconfigure this by running the FlutterFire CLI again.',
+        );
+      case TargetPlatform.windows:
+        throw UnsupportedError(
+          'DefaultFirebaseOptions have not been configured for windows - '
+          'you can reconfigure this by running the FlutterFire CLI again.',
+        );
+      case TargetPlatform.linux:
+        throw UnsupportedError(
+          'DefaultFirebaseOptions have not been configured for linux - '
+          'you can reconfigure this by running the FlutterFire CLI again.',
+        );
+      default:
+        throw UnsupportedError(
+          'DefaultFirebaseOptions are not supported for this platform.',
+        );
+    }
+  }
+
+  static const FirebaseOptions android = FirebaseOptions(
+    apiKey: '',
+    appId: '',
+    messagingSenderId: '',
+    projectId: '',
+    storageBucket: '',
+  );
+
+  static const FirebaseOptions ios = FirebaseOptions(
+    apiKey: '',
+    appId: '',
+    messagingSenderId: '',
+    projectId: '',
+    storageBucket: '',
+    iosClientId: '',
+    iosBundleId: '',
+  );
+}
diff --git a/lib/main_prod.dart b/lib/main_prod.dart
index a47d421..fc1700a 100644
--- a/lib/main_prod.dart
+++ b/lib/main_prod.dart
@@ -1,3 +1,5 @@
+import 'dart:developer';
+
 import 'package:flutter/material.dart';
 import 'package:lightmeter/application.dart';
 import 'package:lightmeter/environment.dart';
@@ -5,6 +7,10 @@ import 'package:lightmeter/firebase.dart';
 
 Future<void> main() async {
   WidgetsFlutterBinding.ensureInitialized();
-  await initializeFirebase();
+  try {
+    await initializeFirebase();
+  } catch (e) {
+    log(e.toString());
+  }
   runApp(const Application(Environment.prod()));
 }