Show what it looks like in the README

Author: coatless

README.Rmd

@@ -71,7 +71,6 @@ For example, let's create a Dockerfile for an R script:
 
 ```{r}
 #| label: basic-dockerfile
-#| eval: false
 library(dockitect)
 
 # Create a basic Dockerfile for an R script

README.md

@@ -74,6 +74,12 @@ df_rscript <- dockerfile() |>
   dfi_cmd("Rscript /app/analysis.R")
 
 df_rscript
+#> FROM rocker/r-ver:4.4.3
+#> LABEL maintainer="[email protected]"
+#> RUN apt-get update && apt-get install -y libcurl4-openssl-dev
+#> WORKDIR /app
+#> COPY analysis.R /app/
+#> CMD Rscript /app/analysis.R
 
 ## Write the Dockerfile to disk
 # write_dockerfile(df_rscript)