Added SaltStack

Appium/Dockerfile

@@ -34,6 +34,8 @@ WORKDIR /root
 #   X virtual framebuffer
 # gnupg
 #   Encryption software. It is needed for nodejs
+# salt-minion
+#   Infrastructure management (client-side)
 #==================
 RUN apt-get -qqy update && \
     apt-get -qqy --no-install-recommends install \
@@ -48,6 +50,7 @@ RUN apt-get -qqy update && \
     libgconf-2-4 \
     xvfb \
     gnupg \
+    salt-minion \
   && rm -rf /var/lib/apt/lists/*
 
 #===============

Appium/entry_point.sh

@@ -4,6 +4,13 @@ NODE_CONFIG_JSON="/root/nodeconfig.json"
 APPIUM_LOG="/var/log/appium.log"
 CMD="xvfb-run appium --log $APPIUM_LOG"
 
+if [ ! -z "${SALT_MASTER}" ]; then
+    echo "[INIT] ENV SALT_MASTER it not empty, salt-minion will be prepared"
+    echo "master: ${SALT_MASTER}" >> /etc/salt/minion
+    salt-minion &
+    echo "[INIT] salt-minion is running..."
+fi
+
 if [ "$REMOTE_ADB" = true ]; then
     /root/wireless_connect.sh
 fi

README.md

@@ -166,6 +166,10 @@ The image generates the node config file, if you would like to provide your own
 
 Pass environment variable RELAXED_SECURITY=true to disable additional security check to use some advanced features.
 
+### Enable SaltStack
+
+You can enable [SaltStack](https://github.com/saltstack/salt) to control running containers by passing environment variable SALT_MASTER=<ip_address_of_salt_master>.
+
 ### Docker compose
 
 There is [an example of compose file](examples/docker-compose.yml) to simulate the connection between selenium hub and appium server with connected device(s) in docker solution.