shiny_server:1.5.7.890 and r:3.5.0

Version bump to 1.5.7.890 (#1)

All versions changes:
- R:            3.4.3 -> 3.5.0
- Shiny:        1.0.5 -> 1.1.0
- shiny-server: 1.5.6.875 -> 1.5.7.890

shiny_server:1.5.6.875 and r:3.4.3

Also shiny 1.0.5

shiny_server:1.5.3.838 and r:3.4.2

r3.4.2

Updated r from 3.4.1 to 3.4.2

shiny_server:1.5.3.838 and r:3.4.1

r3.4.1

Dockerfile to make stable shiny-server docker image