chore(make): Split and enhancements

- split Makefile in several sub files
- use a separated container for tests
-

makefiles/containers.mk

@@ -0,0 +1,47 @@
+
+# Get the container (Podman is preferred, but docker can be used too. It may failed with Docker.)
+# TODO: propose nerdctl
+CTN:=$(shell which podman 2>&1 1>/dev/null && echo "podman" || echo "docker")
+ifeq ($(CTN),podman)
+	CTN_USERMAP=--userns=keep-id
+else
+	$(MAKE) warn-docker
+	CTN_USERMAP=--user=$(shell id -u):$(shell id -g) -e HOME=/tmp
+endif
+
+# Packaging OCI image, to build rpm, deb, pacman, tar packages
+# We changes the keep-id uid/gid for Podman, so that the user inside the container is the same as the user outside.
+# For Docker, as it doesn't support userns, we use common options, but it may fail...
+PKG_OCI_IMAGE=packaging:fedora
+ifeq ($(CTN),podman)
+	# podman
+	PKG_OCI_OPTS:=--rm -it \
+		-v ./:/opt/katenary:z \
+		--userns keep-id:uid=1001,gid=1001 \
+		$(PKG_OCI_IMAGE)
+else
+	# docker
+	PKG_OCI_OPTS:=--rm -it \
+		-v ./:/opt/katenary:z \
+		-e HOME=/tmp \
+		$(CTN_USERMAP) \
+		$(PKG_OCI_IMAGE)
+endif
+GO_BUILD=go build -ldflags="-X 'katenary/generator.Version=$(VERSION)'" -o $(OUTPUT)  ./cmd/katenary
+BUILD_IMAGE=docker.io/golang:$(GOVERSION)
+	
+GO_OCI:=$(CTN) run --rm -it \
+	-v $(PWD):/go/src/katenary:z \
+	-w /go/src/katenary \
+	-e CGO_ENABLED=$(CGO_ENABLED) \
+	-e GOOS=$(GOOS) \
+	-e GOARCH=$(GOARCH) \
+	$(CTN_USERMAP) \
+	go-builder:$(GOVERSION)
+
+packager-oci-image:
+	@$(CTN) build -t packaging:fedora ./oci/packager 1>/dev/null
+
+builder-oci-image:
+	@$(CTN) build -t go-builder:$(GOVERSION) ./oci/builder \
+		--build-arg GOVERSION=$(GOVERSION) 1>/dev/null