Add Dockerfile

- Add Docker image
- Fix whitespace location in the footer when version is not provided
- Add log message when the server is about to start

Signed-off-by: Julien Riou <julien@riou.xyz>

src/server/server.go

@@ -347,5 +347,6 @@ func (s *Server) Start() error {
 	r.Path("/").Handler(&HomeHandler{Templates: templates, PageData: p}).Methods("GET")
 
 	addr := fmt.Sprintf("%s:%d", s.config.ListenAddress, s.config.ListenPort)
+	s.logger.Info(fmt.Sprintf("listening to %s:%d", s.config.ListenAddress, s.config.ListenPort))
 	return http.ListenAndServe(addr, r)
 }

src/server/templates/footer.html

@@ -1,5 +1,5 @@
     {{define "footer"}}
     <footer class="text-center">
-        <small>Powered by <a href="https://git.riou.xyz/jriou/coller">coller</a> {{if ne .Version ``}}({{.Version}}){{end}}</small>
+        <small>Powered by <a href="https://git.riou.xyz/jriou/coller">coller</a>{{if ne .Version ``}} ({{.Version}}){{end}}</small>
     </footer>
-    {{end}}
+    {{end}}