Optimized Android images and replaced redir by Socat

Dockerfile

@@ -5,28 +5,20 @@ LABEL maintainer "Halim Qarroum <hqm.post@gmail.com>"
 LABEL description "A Docker image allowing to run an Android emulator"
 LABEL version "1.0.0"
 
-# `redir.c` will be used to redirect
-# localhost ADB ports to the container interface.
-COPY deps/redir/redir.c /usr/src/redir.c
-
 # Installing required packages.
 RUN apk update && \
 	apk upgrade && \
 	apk add --no-cache \
-		alpine-sdk \
 		bash \
 		unzip \
 		wget \
 		libvirt-daemon \
 		dbus \
 		polkit \
+		socat \
 		virt-manager && \
-	# Compile `redir`.
-	gcc /usr/src/redir.c -o /usr/bin/redir && \
-	strip /usr/bin/redir && \
 	# Cleanup APK.
-	apk del alpine-sdk && \
-	rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* /var/cache/apk/*
+	rm -rf /tmp/* /var/tmp/* /var/cache/apk/*
 
 # Arguments that can be overriden at build-time.
 ARG INSTALL_ANDROID_SDK=1
@@ -49,7 +41,7 @@ ENV ANDROID_SDK_ROOT=/opt/android \
     QTWEBENGINE_DISABLE_SANDBOX=1 \
     ANDROID_EMULATOR_WAIT_TIME_BEFORE_KILL=10
 
-# Exporting environment variables for keeping in the path
+# Exporting environment variables to keep in the path
 # Android SDK binaries and shared libraries.
 ENV PATH "${PATH}:${ANDROID_SDK_ROOT}/platform-tools"
 ENV PATH "${PATH}:${ANDROID_SDK_ROOT}/emulator"
@@ -70,16 +62,17 @@ RUN mkdir /root/.android/ && \
 # Exporting ADB keys.
 COPY keys/* /root/.android/
 
-# Copy the startup scripts.
-COPY scripts/* /opt/
-
-# Make the scripts executable.
-RUN chmod +x /opt/*.sh
-
-# This layer will download the Android command-line tools
+# The following layers will download the Android command-line tools
 # to install the Android SDK, emulator and system images.
 # It will then install the Android SDK and emulator.
+COPY scripts/install-sdk.sh /opt/
+RUN chmod +x /opt/install-sdk.sh
 RUN /opt/install-sdk.sh
 
+# Copy the container scripts in the image.
+COPY scripts/start-emulator.sh /opt/
+COPY scripts/emulator-monitoring.sh /opt/
+RUN chmod +x /opt/*.sh
+
 # Set the entrypoint
 ENTRYPOINT ["/opt/start-emulator.sh"]