Using the slim approach instead of the GUI approach for Dockerfiles

Dockerfile

@@ -1,14 +1,16 @@
 # Handles compiling and package installation
 FROM ubuntu:18.04 AS compile-image
-# Install Dependencies
+# Install build dependencies
 RUN apt-get update && apt-get install -y --no-install-recommends \
         python3 python3-pip \
         # Required for local pip install
         python3-setuptools \
         # Required for venv setup
         python3-venv \
-        # Required to build RLE module
-        build-essential python3-dev
+        # Required to build RLE module and dbus-python
+        build-essential python3-dev \
+        libdbus-1-dev \
+        libdbus-glib-1-dev
 
 RUN python3 -m venv /opt/venv
 # Make sure we use the virtualenv:
@@ -21,14 +23,18 @@ COPY ext/rle.c /pyrdp/ext/rle.c
 COPY pyrdp/ /pyrdp/pyrdp/
 # Install in the virtualenv
 RUN cd /pyrdp \
-    && pip3 --no-cache-dir install . -U
+    && pip3 --no-cache-dir install .[GUI] -U
+
 
 # Handles runtime only (minimize size for distribution)
 FROM ubuntu:18.04 AS docker-image
 
-# Install Dependencies
+# Install runtime dependencies except pre-built venv
 RUN apt-get update && apt-get install -y --no-install-recommends python3 \
-    && rm -rf /var/lib/apt/lists/*
+        # GUI and notifications stuff
+        libgl1-mesa-glx \
+        notify-osd dbus-x11 libxkbcommon-x11-0 \
+        && rm -rf /var/lib/apt/lists/*
 
 # Copy preinstalled dependencies from compile image
 COPY --from=compile-image /opt/venv /opt/venv

Dockerfile.gui → Dockerfile.slim

@@ -1,16 +1,18 @@
+#
+# This is a slimmer version of our docker image without the graphical player
+# and notification system integration.
+#
 # Handles compiling and package installation
 FROM ubuntu:18.04 AS compile-image
-# Install Dependencies
+# Install build dependencies
 RUN apt-get update && apt-get install -y --no-install-recommends \
         python3 python3-pip \
         # Required for local pip install
         python3-setuptools \
         # Required for venv setup
         python3-venv \
-        # Required to build RLE module and dbus-python
-        build-essential python3-dev \
-        libdbus-1-dev \
-        libdbus-glib-1-dev
+        # Required to build RLE module
+        build-essential python3-dev
 
 RUN python3 -m venv /opt/venv
 # Make sure we use the virtualenv:
@@ -23,18 +25,14 @@ COPY ext/rle.c /pyrdp/ext/rle.c
 COPY pyrdp/ /pyrdp/pyrdp/
 # Install in the virtualenv
 RUN cd /pyrdp \
-    && pip3 --no-cache-dir install .[GUI] -U
-
+    && pip3 --no-cache-dir install . -U
 
 # Handles runtime only (minimize size for distribution)
 FROM ubuntu:18.04 AS docker-image
 
-# Install Dependencies
+# Install runtime dependencies except pre-built venv
 RUN apt-get update && apt-get install -y --no-install-recommends python3 \
-        # GUI stuff
-        libgl1-mesa-glx \
-        notify-osd dbus-x11 libxkbcommon-x11-0 \
-        && rm -rf /var/lib/apt/lists/*
+    && rm -rf /var/lib/apt/lists/*
 
 # Copy preinstalled dependencies from compile image
 COPY --from=compile-image /opt/venv /opt/venv