Added docker and first exercise

docker_start.sh

@@ -0,0 +1,21 @@
+#! /usr/bin/env bash
+
+PORT="8888"
+CIDFILE=".docker_cid"
+username=$(whoami)
+
+if [ -e $CIDFILE ]; then
+    CID=$(cat $CIDFILE)
+    CMD="docker start $CID"
+    $CMD
+else
+    CMD="docker run \
+        --cidfile=$CIDFILE \
+        -p $PORT:$PORT \
+        -v `pwd`:/home/$username/image_processing \
+        -d \
+        --name image_processing_ss16_container \
+        image_processing_ss16"
+    echo "$CMD"
+    $CMD
+fi