diff --git a/src/rebar3_docker_build.erl b/src/rebar3_docker_build.erl
index 17791e8..1ac7faa 100644
--- a/src/rebar3_docker_build.erl
+++ b/src/rebar3_docker_build.erl
@@ -38,8 +38,7 @@ do(RState) ->
         {ok, RState2} ->
             Config = rebar3_docker_util:config(RState2),
             Params = template_parameters(RState2, Config),
-            TemplateFile = filename:join([code:priv_dir(rebar3_docker),
-                                          "templates", "Dockerfile"]),
+            TemplateFile = template_file(RState2, Config),
             Template = bbmustache:parse_file(TemplateFile),
             Data = bbmustache:compile(Template, Params,
                 [{key_type, atom}, {escape_fun, fun(X) -> X end}]),
@@ -86,6 +85,15 @@ template_parameters(RState, Config) ->
         runtime_packages => [#{name => N}
                             || N <- maps:get(runtime_packages, Config)]
     }.
+template_file(RState, Config) ->
+    case maps:get(template, Config, undefined) of
+        undefined ->
+            rebar_api:info("Using default template to generate the Dockerfile", []),
+            filename:join([code:priv_dir(rebar3_docker), "templates", "Dockerfile"]);
+        Bin ->
+            rebar_api:info("Using custom template from docker config to generate the Dockerfile", []),
+            filename:join([rebar_state:dir(RState), Bin])
+    end.
 
 escape_string(Str) when is_binary(Str) ->
     iolist_to_binary(io_lib:format("\"~s\"",
diff --git a/src/rebar3_docker_util.erl b/src/rebar3_docker_util.erl
index 4037fd9..8edd190 100644
--- a/src/rebar3_docker_util.erl
+++ b/src/rebar3_docker_util.erl
@@ -16,6 +16,7 @@
         {erlang_version, binary},
         {builder_image, binary},
         {appname, binary},
+        {template, binary},
         {build_packages, [list, binary]},
         {git_url_rewrites, [list, [tuple, [binary, binary]]]},
         {runtime_packages, [list, binary]},