feat(podman): add method to generate podman based docker image package

resources/com/cadoles/podman/nfpm.yaml.gotmpl

@@ -0,0 +1,25 @@
+{{ $serviceName := index ( .Env.IMAGE_NAME | strings.Split "/" | coll.Reverse ) 0 }}
+name: "cadoles-pod-{{ $serviceName }}"
+arch: amd64
+platform: linux
+version: "{{ strings.TrimPrefix "v" ( getenv "IMAGE_TAG" "latest" ) }}"
+version_schema: none
+version_metadata: git
+section: "{{ getenv "PACKAGE_SECTION" "default" }}"
+priority: "{{ getenv "PACKAGE_PRIORITY" "optional" }}"
+maintainer: "{{ getenv "PACKAGE_MAINTAINER" "contact@cadoles.com" }}"
+description: "{{ getenv "PACKAGE_DESCRIPTION" "" }}"
+homepage: "{{ getenv "PACKAGE_HOMEPAGE" "https://forge.cadoles.com" }}"
+license: "{{ getenv "PACKAGE_LICENCE" "GPL-3.0" }}"
+depends:
+  - podman
+scripts:
+    postinstall: post-install.sh
+contents:
+  - packager: deb
+    src: pod.service
+    dst: "/usr/lib/systemd/system/cadoles-pod-{{ $serviceName }}.service"
+  - packager: deb
+    src: pod.conf
+    dst: /etc/cadoles-pod-{{ $serviceName }}.conf
+    type: config|noreplace