diff --git a/.drone.yml b/.drone.yml
new file mode 100644
index 0000000..6a35e64
--- /dev/null
+++ b/.drone.yml
@@ -0,0 +1,28 @@
+kind: pipeline
+type: docker
+name: JustMusic
+
+trigger:
+  event:
+    - push
+
+steps:
+#  - name: app-build
+#    image: cirrusci/flutter:stable
+#    commands:
+#      - cd ./Sources/justMUSIC/
+#      - flutter build apk
+
+  - name: code-analysis
+    image: cirrusci/flutter:stable 
+    environment:
+      SONAR_TOKEN:
+        from_secret: SONAR_TOKEN
+    commands:
+      - export SONAR_SCANNER_VERSION=4.7.0.2747
+      - export SONAR_SCANNER_HOME=$HOME/.sonar/sonar-scanner-$SONAR_SCANNER_VERSION-linux
+      - curl --create-dirs -sSLo $HOME/.sonar/sonar-scanner.zip https://binaries.sonarsource.com/Distribution/sonar-scanner-cli/sonar-scanner-cli-$SONAR_SCANNER_VERSION-linux.zip
+      - unzip -o $HOME/.sonar/sonar-scanner.zip -d $HOME/.sonar/
+      - export PATH=$SONAR_SCANNER_HOME/bin:$PATH
+      - export SONAR_SCANNER_OPTS="-server"
+      - sonar-scanner -D sonar.projectKey=JustMusic -D sonar.sources=./Sources/justMUSIC -D sonar.host.url=https://codefirst.iut.uca.fr/sonar
\ No newline at end of file
diff --git a/Sources/justMUSIC/lib/services/PostService.dart b/Sources/justMUSIC/lib/services/PostService.dart
index 9aff8e2..7e71ff4 100644
--- a/Sources/justMUSIC/lib/services/PostService.dart
+++ b/Sources/justMUSIC/lib/services/PostService.dart
@@ -46,7 +46,7 @@ class PostService {
       {int limit = 10, int offset = 0}) async {
     DateTime twentyFourHoursAgo = DateTime.now().subtract(Duration(hours: 24));
     Timestamp twentyFourHoursAgoTimestamp =
-    Timestamp.fromDate(twentyFourHoursAgo);
+        Timestamp.fromDate(twentyFourHoursAgo);
 
     QuerySnapshot<Map<String, dynamic>> response = await FirebaseFirestore
         .instance
@@ -62,22 +62,22 @@ class PostService {
     return filteredPosts;
   }
 
+  Timestamp _getTwentyFourHoursAgoTimestamp() {
+    DateTime twentyFourHoursAgo = DateTime.now().subtract(Duration(hours: 24));
+    return Timestamp.fromDate(twentyFourHoursAgo);
+  }
+
   Future<List<QueryDocumentSnapshot<Map<String, dynamic>>>> getPostsFriends(
       {int limit = 10, int offset = 0}) async {
-    var response = await FirebaseFirestore
-        .instance
+    var timestamp = _getTwentyFourHoursAgoTimestamp();
+    var response = await FirebaseFirestore.instance
         .collection("posts")
         .where("user_id", whereIn: MyApp.userViewModel.userCurrent.followed)
+        .where("date", isGreaterThan: timestamp)
+        .orderBy("date")
         .limit(limit)
         .get();
 
-    response.docs.sort((a, b) {
-      DateTime aDate = a.data()['date'].toDate();
-      DateTime bDate = b.data()['date'].toDate();
-
-      return bDate.compareTo(aDate);
-    });
-
     return response.docs;
   }
 
diff --git a/Sources/justMUSIC/lib/view_model/PostViewModel.dart b/Sources/justMUSIC/lib/view_model/PostViewModel.dart
index e74ab19..d60a4ce 100644
--- a/Sources/justMUSIC/lib/view_model/PostViewModel.dart
+++ b/Sources/justMUSIC/lib/view_model/PostViewModel.dart
@@ -36,11 +36,12 @@ class PostViewModel {
         ids.add(value.data()["song_id"]);
         return PostMapper.toModel(value);
       }).toList();
-      _postsFriends = await Future.wait(postsFutures);
+      var posts = await Future.wait(postsFutures);
       List<Music> musics = await MyApp.musicViewModel.getMusicsWithIds(ids);
-      for (int i = 0; i < _postsFriends.length; i++) {
-        _postsFriends[i].music = musics[i];
+      for (int i = 0; i < posts.length; i++) {
+        posts[i].music = musics[i];
       }
+      _postsFriends = posts;
       return _postsFriends;
     } catch (e) {
       print(e);
@@ -61,11 +62,12 @@ class PostViewModel {
         ids.add(value.data()["song_id"]);
         return PostMapper.toModel(value);
       }).toList();
-      _bestPosts = await Future.wait(postsFutures);
+      var posts = await Future.wait(postsFutures);
       List<Music> musics = await MyApp.musicViewModel.getMusicsWithIds(ids);
-      for (int i = 0; i < _bestPosts.length; i++) {
-        _bestPosts[i].music = musics[i];
+      for (int i = 0; i < posts.length; i++) {
+        posts[i].music = musics[i];
       }
+      _bestPosts = posts;
       return _bestPosts;
     } catch (e) {
       print(e);