refactor and add testing

.circleci/config.yml

@@ -44,9 +44,10 @@ jobs:
               fx up examples/functions/func.go >> deploy.log
               fx up examples/functions/func.php >> deploy.log
               fx up examples/functions/func.jl >> deploy.log
+              fx up examples/functions/func.R >> deploy.log
               cat server_output.log
               cat deploy.log;
-              cat deploy.log | grep 'Succed: 1' | wc -l | grep 6
+              cat deploy.log | grep 'Succed: 1' | wc -l | grep 7
 
 deployment:
     production:

images/R/Dockerfile

@@ -1,10 +1,8 @@
 FROM r-base
 
-RUN echo 'install.packages(c("jug", "jsonlite"), repos="http://cran.us.r-project.org", dependencies=TRUE)' > /tmp/packages.R \
-    && Rscript /tmp/packages.R
-
 COPY . /usr/local/src/fx
 WORKDIR /usr/local/src/fx
+RUN Rscript packages.R
 
 CMD ["Rscript", "app.R"]
 EXPOSE 3000

images/R/packages.R

@@ -0,0 +1,2 @@
+install.packages(c("jug"))
+install.packages(c("jsonlite"))