diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..c245e80
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,40 @@
+FROM python:3.11-slim as builder
+
+ENV PYTHONFAULTHANDLER=1 \
+    PYTHONUNBUFFERED=1 \
+    PYTHONHASHSEED=random \
+    PYTHONDONTWRITEBYTECODE=1 \
+    PIP_NO_CACHE_DIR=off \
+    PIP_DISABLE_PIP_VERSION_CHECK=on \
+    PIP_DEFAULT_TIMEOUT=100 \
+    POETRY_VERSION=1.3.1 \
+    POETRY_VIRTUALENVS_CREATE=0
+
+RUN pip install "poetry==$POETRY_VERSION"
+
+WORKDIR /app
+COPY poetry.lock pyproject.toml /app/
+RUN poetry install --no-interaction --no-ansi --only main
+COPY README.md /app/
+COPY plexy/ /app/plexy/
+RUN poetry build --no-interaction --no-ansi
+
+
+FROM python:3.11-slim
+
+ENV PYTHONFAULTHANDLER=1 \
+    PYTHONUNBUFFERED=1 \
+    PYTHONHASHSEED=random \
+    PYTHONDONTWRITEBYTECODE=1 \
+    PIP_NO_CACHE_DIR=off \
+    PIP_DISABLE_PIP_VERSION_CHECK=on \
+    PIP_DEFAULT_TIMEOUT=100
+
+COPY --from=builder /app/dist /usr/src/dist
+
+RUN pip install /usr/src/dist/plexy-*.tar.gz
+
+WORKDIR /
+
+ENTRYPOINT ["plexy"]
+CMD ["--help"]
diff --git a/README.md b/README.md
index 9b04776..cf14584 100644
--- a/README.md
+++ b/README.md
@@ -74,6 +74,14 @@ You can exclude this codec when saving your preferences:
 >> plexy --url http://mylocalplex:32400 --token ABCDEF1234567890 preferences --language pt-BR -A truehd original
 ```
 
+And print the full summary of changes:
+```bash
+>> plexy --url http://ratostation.nas:32400 --token FLRJstK4r4TiR4_Soafq preferences -f -l en --title "The Matrix (1999)" original
+Configuring watching preferences  [####################################]  100%
+1 movie changed out of 1 selected movie
+The Matrix (1999) changed from pt-BR: Português (SRT External) to no subtitles
+```
+
 
 All available CLI options:
 ```bash
@@ -107,6 +115,12 @@ Options:
 ```
 
 
+## Using Docker
+
+
+    docker run -it --rm plexy --url http://mylocalplex:32400 --token ABCDEF1234567890 preferences --language pt-BR -A truehd original
+
+
 ## Installation
 
 **Plexy** can be installed as a regular python module by running:
diff --git a/plexy/api.py b/plexy/api.py
index 725b093..09f4b2c 100644
--- a/plexy/api.py
+++ b/plexy/api.py
@@ -436,6 +436,7 @@ def get_sorted_subtitle_streams(self, preferences: Preferences):
     def save_preferences(self, preferences: Preferences):
         previous_selected_audio = self.selected_audio
         previous_selected_subtitle = self.selected_subtitle
+        selected_subtitle = previous_selected_subtitle
 
         audio_streams = self.get_sorted_audio_streams(preferences)
         selected_audio = audio_streams[0] if audio_streams else previous_selected_audio
@@ -451,6 +452,7 @@ def save_preferences(self, preferences: Preferences):
             if previous_selected_subtitle:
                 logger.debug('%s - no subtitle selected', self.title)
                 self.unselect_subtitle()
+                selected_subtitle = None
         else:
             subtitle_streams = self.get_sorted_subtitle_streams(preferences)
             selected_subtitle = subtitle_streams[0] if len(subtitle_streams) else previous_selected_subtitle
@@ -461,8 +463,8 @@ def save_preferences(self, preferences: Preferences):
                              selected_subtitle)
                 self.select_subtitle(selected_subtitle)
 
-        if self.selected_audio != previous_selected_audio or self.selected_subtitle != previous_selected_subtitle:
-            return Change(self, previous_selected_audio, previous_selected_subtitle)
+        if selected_audio != previous_selected_audio or selected_subtitle != previous_selected_subtitle:
+            return Change(self, previous_selected_audio, previous_selected_subtitle, selected_audio, selected_subtitle)
 
     def __str__(self):
         return f'{self.title}'
@@ -476,12 +478,14 @@ class Change:
     def __init__(self,
                  video: VideoPart,
                  previous_audio: Stream,
-                 previous_subtitle: Stream):
+                 previous_subtitle: Stream,
+                 audio: Stream,
+                 subtitle: Stream):
         self.video = video
         self.previous_audio = previous_audio
         self.previous_subtitle = previous_subtitle
-        self.audio = video.selected_audio
-        self.subtitle = video.selected_subtitle
+        self.audio = audio
+        self.subtitle = subtitle
 
     def __repr__(self):
         return f'<{self.__class__.__name__} - {self.video}]>'