dscanner - Drozer based post-build dynamic vulnerability scanner command

* New command `dscanner`, enables one to scan signed APKs with Drozer
 * Drozer is a dynamic vulnerability scanner for Android
 * Drozer runs in a emulator or on-device, this new `dscanner` command...
  * starts a docker image with Drozer and the Android Emulator pre-installed,
  * loads the signed APK into the emulator
  * activates Drozer automated tests for the APK
  * gathers the report output and places it next to the original APK
 * The Drozer docker image can be:
  * cached locally for re-use (just don't run --clean*)
  * retrieved from dockerhub.com for more efficient runtime
  * or be built from scratch (in the new "./docker" directory)
 * New "Vulnerability Scanning" documentation section (run gendocs.sh)

docker/Makefile

@@ -0,0 +1,48 @@
+SHELL := /bin/bash
+ALIAS = "dscanner"
+EXISTS := $(shell docker ps -a -q -f name=$(ALIAS))
+RUNNED := $(shell docker ps -q -f name=$(ALIAS))
+ifneq "$(RUNNED)" ""
+IP := $(shell docker inspect $(ALIAS) | grep "IPAddress\"" | head -n1 | cut -d '"' -f 4)
+endif
+STALE_IMAGES := $(shell docker images | grep "<none>" | awk '{print($$3)}')
+EMULATOR ?= "android-19"
+ARCH ?= "armeabi-v7a"
+
+COLON := :
+
+.PHONY = build clean kill info
+
+all: help
+
+help:
+	@echo "usage: make {help|build|clean|kill|info}"
+	@echo ""
+	@echo "  help    this help screen"
+	@echo "  build   create docker image"
+	@echo "  clean   remove images and containers"
+	@echo "  kill    stop running containers"
+	@echo "  info    details of running container"
+
+build:
+	@docker build -t "dscanner/fdroidserver:latest" .
+
+clean: kill
+	@docker ps -a -q | xargs -n 1 -I {} docker rm -f {}
+ifneq "$(STALE_IMAGES)" ""
+	@docker rmi -f $(STALE_IMAGES)
+endif
+
+kill:
+ifneq "$(RUNNED)" ""
+	@docker kill $(ALIAS)
+endif
+
+info:
+	@docker ps -a -f name=$(ALIAS)
+ifneq "$(RUNNED)" ""
+	$(eval ADBPORT := $(shell docker port $(ALIAS) | grep '5555/tcp' | awk '{split($$3,a,"$(COLON)");print a[2]}'))
+	@echo -e "Use:\n adb kill-server\n adb connect $(IP):$(ADBPORT)"
+else
+	@echo "Run container"
+endif