change Locale by ja_JP.UTF-8 UTF-8
and
change TimeZone by Asia/Tokyo
Collect the package needed to rails
do not put rails gem
latest
(Dockerfile)2
,2-alpine
(Dockerfile)2.2
,2.2-alpine
(Dockerfile)2.3
,2.3-alpine
(Dockerfile)2.1
,2.1-alpine
(Dockerfile)2.1.2
,2.1.2-alpine
(Dockerfile)