自己署名証明書でhttpsに対応、--spring.config.locationで切り替え。

[msakamoto-sf]

参考:

• https://docs.spring.io/spring-boot/docs/2.1.3.RELEASE/reference/htmlsingle/#howto-configure-ssl
• https://qiita.com/keigohtr/items/001b84838fefcc170ea2
• https://docs.spring.io/spring-boot/docs/current/reference/html/boot-features-external-config.html