Remove dockerfile, using podman with latest snippet of working action

entrypoint.sh

@@ -1,4 +1,11 @@
-#!/bin/sh -l
+#!/usr/bin/env bash
 
-toolbox run rpmdev-spectool -g -C ~/rpmbuild/SOURCES $1
+dnf -y config-manager --add-repo https://git.hydrosaber.com/api/packages/hydros/rpm/f43.repo
+
+dnf -y install rpmdevtools
+rpmdev-setuptree
+
+dnf -y builddep $1
+
+rpmdev-spectool -g -C ~/rpmbuild/SOURCES $1
 rpmbuild --nodebuginfo --bb $1