feat: add container setup

- build container with multi-stage Dockerfile
- change api listen port to 9001

legacy/locale/locale.gen

@@ -0,0 +1,21 @@
+cs_CZ.UTF-8 UTF-8
+de_AT.UTF-8 UTF-8
+de_DE.UTF-8 UTF-8
+el_GR.UTF-8 UTF-8
+en_CA.UTF-8 UTF-8
+en_GB.UTF-8 UTF-8
+en_US.UTF-8 UTF-8
+es_ES.UTF-8 UTF-8
+fr_FR.UTF-8 UTF-8
+hr_HR.UTF-8 UTF-8
+hu_HU.UTF-8 UTF-8
+it_IT.UTF-8 UTF-8
+ja_JP.UTF-8 UTF-8
+ko_KR.UTF-8 UTF-8
+pl_PL.UTF-8 UTF-8
+pt_BR.UTF-8 UTF-8
+ru_RU.UTF-8 UTF-8
+sr_RS.UTF-8 UTF-8
+sr_RS@latin.UTF-8 UTF-8
+uk_UA.UTF-8 UTF-8
+zh_CN.UTF-8 UTF-8