feat: Added initial support for bulding RPMs using Packit

* Card ID: CCT-231
* Added .packit.yml
* RPMs are build, when PR is created/updated
* RPMs are build for CentOS Strem 8/9, RHEL 8/9 and all Fedoras
* Added autochangelog and set source_date_epoch_from_changelog to 0.
  Use %autochangelog only for rhel9+ and fedora.
* Deleted .copr/Makefile
* Moved rhc.spec.in to ./
* Added rhc.spec target to Makefile and modified this file little bit

.packit.yml

@@ -0,0 +1,48 @@
+upstream_package_name: rhc
+downstream_package_name: rhc
+specfile_path: rhc.spec
+
+srpm_build_deps:
+  - gawk
+  - git-core
+  - golang
+  - make
+  - 'pkgconfig(dbus-1)'
+  - 'pkgconfig(systemd)'
+  - rpm-build
+
+actions:
+  post-upstream-clone:
+    - bash -c 'make rhc.spec dist'
+  get-current-version:
+    - awk '/^Version:/ {print $2;}' ./rhc.spec
+  create-archive:
+    - bash -c 'echo rhc-*.tar.*'
+  fix-spec-file:
+    - echo 'nothing to fix'
+
+jobs:
+  - job: copr_build
+    trigger: pull_request
+    additional_repos:
+      - "copr://@yggdrasil/latest"
+    targets:
+      - centos-stream-8
+      - centos-stream-9
+      - fedora-all
+      - rhel-8
+      - rhel-9
+
+  - job: copr_build
+    trigger: commit
+    additional_repos:
+      - "copr://@yggdrasil/latest"
+    branch: main
+    owner: "@yggdrasil"
+    project: latest
+    targets:
+      - centos-stream-8
+      - centos-stream-9
+      - fedora-all
+      - rhel-8
+      - rhel-9

Makefile

@@ -139,11 +139,33 @@ dist:
 		--exclude=.vscode \
 		--exclude=.github \
 		--exclude=.gitignore \
-		--exclude=.copr \
+		--exclude=rhc-*.tar.gz \
+		--exclude=rhc \
 		--transform s/^\./$(PKGNAME)-$(VERSION)/ \
 		. && mv /tmp/$(PKGNAME)-$(VERSION).tar.gz .
 	rm -rf ./vendor
 
+rhc.spec: rhc.spec.in
+	sed \
+	    -e 's,[@]SHORTNAME[@],$(SHORTNAME),g' \
+		-e 's,[@]LONGNAME[@],$(LONGNAME),g' \
+		-e 's,[@]VERSION[@],$(VERSION),g' \
+		-e 's,[@]PKGNAME[@],$(PKGNAME),g' \
+		-e 's,[@]TOPICPREFIX[@],$(TOPICPREFIX),g' \
+		-e 's,[@]DATAHOST[@],$(DATAHOST),g' \
+		-e 's,[@]PROVIDER[@],$(PROVIDER),g' \
+		-e 's,[@]PREFIX[@],$(PREFIX),g' \
+		-e 's,[@]BINDIR[@],$(BINDIR),g' \
+		-e 's,[@]SBINDIR[@],$(SBINDIR),g' \
+		-e 's,[@]LIBEXECDIR[@],$(LIBEXECDIR),g' \
+		-e 's,[@]DATAROOTDIR[@],$(DATAROOTDIR),g' \
+		-e 's,[@]DATADIR[@],$(DATADIR),g' \
+		-e 's,[@]SYSCONFDIR[@],$(SYSCONFDIR),g' \
+		-e 's,[@]LOCALSTATEDIR[@],$(LOCALSTATEDIR),g' \
+		-e 's,[@]DOCDIR[@],$(DOCDIR),g' \
+		-e 's,[@]SERVICENAME[@],$(SERVICENAME),g' \
+		$^ > $@
+
 .PHONY: clean
 clean:
 	go mod tidy

.copr/rhc.spec.in → rhc.spec.in

@@ -4,17 +4,17 @@
 # the package.
 
 %define debug_package %{nil}
-
+%define source_date_epoch_from_changelog 0
 
 Name:    @LONGNAME@
 Version: @VERSION@
-Release: @RELEASE@%{?dist}
+Release: 0%{?dist}
 Epoch:   1
 Summary: Client for registering Red Hat Enterprise Linux systems
 License: GPL-3.0-only
 URL:     https://github.com/redhatinsights/rhc
 
-Source0: %{name}-%{version}-@RELEASE@.tar.gz
+Source0: %{name}-%{version}.tar.gz
 
 ExclusiveArch: %{go_arches}
 
@@ -39,7 +39,7 @@ MQTT client.
 
 
 %build
-cd %{name}-%{version}-@RELEASE@
+cd %{name}-%{version}
 make PREFIX=%{_prefix} \
      SYSCONFDIR=%{_sysconfdir} \
      LOCALSTATEDIR=%{_localstatedir} \
@@ -54,7 +54,7 @@ make PREFIX=%{_prefix} \
 
 
 %install
-cd %{name}-%{version}-@RELEASE@
+cd %{name}-%{version}
 make PREFIX=%{_prefix} \
      SYSCONFDIR=%{_sysconfdir} \
      LOCALSTATEDIR=%{_localstatedir} \
@@ -70,10 +70,13 @@ make PREFIX=%{_prefix} \
      install
 
 %files
-%doc %{name}-%{version}-@RELEASE@/README.md
+%doc %{name}-%{version}/README.md
 %{_bindir}/@SHORTNAME@
 %{_datadir}/bash-completion/completions/*
 %{_mandir}/man1/*
 
 
 %changelog
+%if (0%{?fedora} || 0%{?rhel} >= 9)
+%autochangelog
+%endif