generate json schema from struct definitions

Signed-off-by: Alex Goodman <alex.goodman@anchore.com>

Makefile

@@ -153,17 +153,9 @@ fixtures:
 	cd syft/cataloger/java/test-fixtures/java-builds && make
 
 .PHONY: generate-json-schema
-generate-json-schema: clean-json-schema-examples integration ## Generate a new json schema for the json presenter, derived from integration test cases
-	docker run \
-		-i \
-		--rm \
-		-v $(shell pwd)/schema/json:/work \
-		-w /work \
-		python:3.8 \
-			bash -x -c "\
-				pip install -r requirements.txt && \
-				python generate.py \
-			"
+generate-json-schema:  ## Generate a new json schema
+	cd schema/json
+	go run generate.go
 
 .PHONY: clear-test-cache
 clear-test-cache: ## Delete all test cache (built docker image tars)
@@ -288,7 +280,7 @@ release: clean-dist ci-bootstrap-mac changelog-release ## Build and publish fina
 	.github/scripts/update-version-file.sh "$(DISTDIR)" "$(VERSION)"
 
 .PHONY: clean
-clean: clean-dist clean-snapshot clean-json-schema-examples ## Remove previous builds and result reports
+clean: clean-dist clean-snapshot ## Remove previous builds and result reports
 	rm -rf $(RESULTSDIR)/*
 
 .PHONY: clean-snapshot
@@ -298,7 +290,3 @@ clean-snapshot:
 .PHONY: clean-dist
 clean-dist:
 	rm -rf $(DISTDIR) $(TEMPDIR)/goreleaser.yaml
-
-.PHONY: clean-json-schema-examples
-clean-json-schema-examples:
-	rm -f schema/json/examples/*