diff --git a/build/DEBIAN/conffiles b/build/DEBIAN/conffiles
new file mode 100644
index 0000000..81edc99
--- /dev/null
+++ b/build/DEBIAN/conffiles
@@ -0,0 +1,3 @@
+/etc/lightdm/web-greeter.yml
+/etc/lightdm/Xgreeter
+/etc/xdg/lightdm/lightdm.conf.d/90-greeter-wrapper.conf
diff --git a/build/DEBIAN/control b/build/DEBIAN/control
index 846db39..912ad13 100644
--- a/build/DEBIAN/control
+++ b/build/DEBIAN/control
@@ -5,10 +5,10 @@ Replaces: lightdm-webkit-greeter
 Section: x11
 Priority: optional
 Homepage: https://github.com/JezerM/web-greeter
-Installed-Size: 15068
+Installed-Size: 15276
 Architecture: all
 Maintainer: JezerM <amyuki4@gmail.com>
-Depends: liblightdm-gobject-1-0, liblightdm-gobject-1-dev, python3, python3-gi, python3-pyqt5, pyqt5-dev, libqt5webengine5, python3-pyqt5.qtwebengine, python3-ruamel.yaml, python3-xlib
+Depends: liblightdm-gobject-1-0, liblightdm-gobject-1-dev, python3, python3-gi, python3-pyqt5, pyqt5-dev, python3-pyinotify, libqt5webengine5, python3-pyqt5.qtwebengine, python3-ruamel.yaml, libxcb1, libx11-6
 Description: A modern, visually appealing greeter for LightDM.
   Web Greeter utilizes themes built with HTML/CSS/JavaScript for it's login screen. Web Greeter
   themes provide modern, visually appealing, and feature-rich login screens. Two themes are
diff --git a/build/ci/Dockerfile b/build/ci/Dockerfile
index 43bb08b..ade2a63 100644
--- a/build/ci/Dockerfile
+++ b/build/ci/Dockerfile
@@ -1,36 +1,40 @@
 FROM ubuntu:20.04
-MAINTAINER Jezer Mejía <amyuki4@gmail.com>
+LABEL maintainer Jezer Mejía <amyuki4@gmail.com>
 
 RUN apt-get update
 
 RUN DEBIAN_FRONTEND=noninteractive apt-get install -y tzdata
 
+RUN DEBIAN_FRONTEND=noninteractive apt-get upgrade -y
+
+RUN DEBIAN_FRONTEND=noninteractive \
+    apt-get install -y \
+        build-essential
+
 RUN DEBIAN_FRONTEND=noninteractive \
-	apt-get install -y \
-		liblightdm-gobject-1-dev \
-		libqt5webengine5 \
-		pyqt5-dev-tools \
-		python3-gi \
-		python3-pyqt5 \
-		python3-ruamel.yaml \
-		python3-pyinotify \
-		python3-xlib \
-		python3-pip
+    apt-get install -y \
+        liblightdm-gobject-1-dev \
+        gobject-introspection \
+        libgirepository1.0-dev \
+        libqt5webengine5 \
+        pyqt5-dev-tools \
+        libxcb1 \
+        libx11-6 \
+        libcairo2
 
 RUN DEBIAN_FRONTEND=noninteractive \
-	apt-get install -y \
-		patchelf \
-		rsync \
-		zip \
-		sudo
+    apt-get install -y \
+        python3-gi \
+        python3-pyqt5 \
+        python3-pyqt5.qtwebengine \
+        python3-ruamel.yaml \
+        python3-pyinotify \
+        python3-pip
 
 RUN DEBIAN_FRONTEND=noninteractive \
-	pip3 install PyGObject \
-		PyQt5 \
-		PyQtWebEngine \
-		ruamel.yaml \
-		python-xlib \
-		cx_Freeze
+    apt-get install -y \
+        rsync \
+        sudo
 
 VOLUME /build
 WORKDIR /build