Added the Makefile

Makefile

@@ -0,0 +1,29 @@
+INVENV = $(shell pip3 -V | grep 'portscanner_venv')
+current_dir = $(shell pwd)
+
+prereqs: venvcheck FORCE
+	pip install -r requirements.txt
+
+venv: FORCE
+	python3 -m venv portscanner_venv
+
+docs:
+	pdoc  --html ./src/*.py --force
+
+venvcheck:
+ifeq ($(INVENV),)
+	$(error You should only run this from within the venv. Use '. ./portscanner_venv/bin/activate')
+else
+	@echo "venv check passed\n"
+endif
+
+
+start_target:
+	-docker kill harbourmaster_target
+	-docker rm harbourmaster_target
+	docker run -t --name harbourmaster_target csx239/harbourmaster_target:latest
+
+
+
+
+FORCE: