Switch to new vendor directory layout

Fixes #113

Signed-off-by: Marcos Lilljedahl <marcosnils@gmail.com>

vendor/github.com/opencontainers/specs/Makefile

@@ -0,0 +1,61 @@
+
+DOCKER ?= $(shell which docker)
+DOC_FILES := \
+	README.md \
+	code-of-conduct.md \
+	principles.md \
+	style.md \
+	ROADMAP.md \
+	implementations.md \
+	bundle.md \
+	runtime.md \
+	runtime-linux.md \
+	config.md \
+	config-linux.md \
+	glossary.md
+EPOCH_TEST_COMMIT := 041eb73d2e0391463894c04c8ac938036143eba3
+
+docs: pdf html
+.PHONY: docs
+
+pdf:
+	@mkdir -p output/ && \
+	$(DOCKER) run \
+	-it \
+	--rm \
+	-v $(shell pwd)/:/input/:ro \
+	-v $(shell pwd)/output/:/output/ \
+	-u $(shell id -u) \
+	vbatts/pandoc -f markdown_github -t latex -o /output/docs.pdf $(patsubst %,/input/%,$(DOC_FILES)) && \
+	ls -sh $(shell readlink -f output/docs.pdf)
+
+html:
+	@mkdir -p output/ && \
+	$(DOCKER) run \
+	-it \
+	--rm \
+	-v $(shell pwd)/:/input/:ro \
+	-v $(shell pwd)/output/:/output/ \
+	-u $(shell id -u) \
+	vbatts/pandoc -f markdown_github -t html5 -o /output/docs.html $(patsubst %,/input/%,$(DOC_FILES)) && \
+	ls -sh $(shell readlink -f output/docs.html)
+
+.PHONY: test .govet .golint .gitvalidation
+
+test: .govet .golint .gitvalidation
+
+# `go get golang.org/x/tools/cmd/vet`
+.govet:
+	go vet -x ./...
+
+# `go get github.com/golang/lint/golint`
+.golint:
+	golint ./...
+
+# `go get github.com/vbatts/git-validation`
+.gitvalidation:
+	git-validation -q -run DCO,short-subject -v -range $(EPOCH_TEST_COMMIT)..HEAD
+
+clean:
+	rm -rf output/ *~
+