Install nano into the image

Show server starting message just before java launch

minecraft-server/Dockerfile

@@ -15,6 +15,7 @@ RUN apk add --no-cache -U \
   mysql-client \
   tzdata \
   rsync \
+  nano \
   python python-dev py2-pip
 
 RUN pip install mcstatus

minecraft-server/start-minecraftFinalSetup

@@ -114,7 +114,8 @@ else
   if [ -f /data/bootstrap.txt ]; then
     bootstrapArgs="--bootstrap /data/bootstrap.txt"
   fi
-  
+
+  echo "Starting the Minecraft server..."
   JVM_OPTS="-Xms${INIT_MEMORY} -Xmx${MAX_MEMORY} ${JVM_OPTS}"
   exec mc-server-runner ${bootstrapArgs} ${mcServerRunnerArgs} java $JVM_XX_OPTS $JVM_OPTS $expandedDOpts -jar $SERVER "$@" $EXTRA_ARGS
 fi