Compact dockerfile (#1202)

feat(docker): default to multi-stage Dockerfile and enable production mode

The `add_dockerfile_with_renv_*` function now:
- generates a multi-stage Dockerfile by default (`single_file = FALSE`)
- sets `golem.app.prod = TRUE` by default (`set_golem.app.prod = FALSE`)

BREAKING CHANGE: 
- Default of `single_file` changed from `TRUE` to `FALSE`
- Default of `set_golem.app.prod` changed from `FALSE` to `TRUE`




* Update DESCRIPTION

bump version

Author: VincentGuyader

DESCRIPTION

@@ -1,6 +1,6 @@
 Package: golem
 Title: A Framework for Robust Shiny Applications
-Version: 0.5.1.9012
+Version: 0.5.1.9013
 Authors@R: c(
     person("Colin", "Fay", , "contact@colinfay.me", role = c("cre", "aut"),
            comment = c(ORCID = "0000-0001-7343-1846")),
@@ -42,7 +42,7 @@ Suggests:
     crayon,
     desc,
     devtools,
-    dockerfiler (>= 0.2.0),
+    dockerfiler (>= 0.2.5),
     fs,
     httpuv,
     knitr,

NEWS.md

@@ -2,6 +2,13 @@
 
 # golem 0.5.1 to 0.6.0
 
+
+
+## New features / user-visible changes
+
+- The `add_dockerfile_with_renv_*` function now generates a multi-stage Dockerfile by default (use `single_file = FALSE` to retain the previous behavior).
+- The `add_dockerfile_with_renv_*` function now creates a Dockerfile that sets `golem.app.prod = TRUE` by default (use `set_golem.app.prod = FALSE` to retain the previous behavior).
+
 ## Breaking change
 
 - The `get_current_config()` has been rework in two ways: (1) it nows either check the `GOLEM_CONFIG_PATH` env var or the default path (inst/golem-config.yml). `{golem}` no longer tries to guess non standard paths, and does a hard fail if the file doesn't exist, (2) the function no longer copy the `config` files from the skeleton if ever the files are not there (@ilyaZar, @LDSamson, #1178)