feat: handle interrupt signal

src/main.cr

@@ -55,15 +55,17 @@ puts "docker_image = #{docker_image}"
 puts "action       = #{action}"
 
 docker_name = "docmachine-#{basehash}"
-docker_cid = %x{docker ps -f "name=#{docker_name} -q)}.strip
+docker_cid = %x{docker ps -f "name=#{docker_name}" -q}.strip
 uid = %x{id -u}.strip
 gid = %x{id -g}.strip
+puts "uid: #{uid}"
+puts "cid: #{gid}"
 
 puts "docker_name: #{docker_name}"
 puts "docker_cid: #{docker_cid}"
 
 if !docker_cid.empty?
-  Process.run("docker", ["kill", docker_cid])
+  Process.run("docker", ["kill", docker_name])
 end
 
 docker_opts << "run"
@@ -127,5 +129,12 @@ docker_opts << docker_image
 docker_opts << action
 
 puts docker_opts.inspect.colorize(:yellow)
-process = Process.run("docker", docker_opts, output: STDOUT, error: STDERR)
+process = Process.new("docker", docker_opts, output: STDOUT, error: STDERR)
+
+Signal::INT.trap do
+  STDERR.puts "Received CTRL-C"
+  process.signal(Signal::KILL)
+  Process.run("docker", ["kill", docker_name])
+end
+process.wait