Fix bundler to work with distroless

Makefile

@@ -141,9 +141,13 @@ coverage:
 # Builds production-ready Go plugin bundle as non-root user, using Tyk Bundler tool
 .PHONY: go-bundle
 go-bundle: go-build
-	sed "s/replace_version/$(TYK_VERSION)/g" tyk/bundle/manifest-template.json | \
-	  sed "s/replace_platform/amd64/g" > tyk/bundle/manifest.json
-	docker-compose run --rm --user=$(DOCKER_USER) --entrypoint "bundle/bundle-entrypoint.sh" tyk-gateway
+.PHONY: go-bundle
+go-bundle: go-build
+    sed "s/replace_version/$(TYK_VERSION)/g" tyk/bundle/manifest-template.json | \
+    sed "s/replace_platform/amd64/g" > tyk/bundle/manifest.json
+    cp tyk/middleware/CustomGoPlugin*.so tyk/bundle/
+    docker-compose run --rm --user=$(DOCKER_USER) --entrypoint "tyk" tyk-gateway bundle build -y
+    rm tyk/bundle/CustomGoPlugin*.so
 
 # Cleans application files
 .PHONY: go-clean