fix adduser line, closes #44, thanks @dmenne

rstudio/3.3.1/add_shiny.sh

@@ -23,7 +23,7 @@ if [ "$ADD" == "shiny" ]; then
     cd /etc/services.d/shiny-server && \
     echo '#!/bin/bash' > run && echo 'exec shiny-server' >> run && \
     chmod +x run && \
-    adduser rstudio shiny \
+    adduser rstudio shiny && \
     cd /
 fi
 

rstudio/3.3.2/add_shiny.sh

@@ -23,7 +23,7 @@ if [ "$ADD" == "shiny" ]; then
     cd /etc/services.d/shiny-server && \
     echo '#!/bin/bash' > run && echo 'exec shiny-server' >> run && \
     chmod +x run && \
-    adduser rstudio shiny \
+    adduser rstudio shiny && \
     cd /
 fi
 

rstudio/3.3.3/add_shiny.sh

@@ -23,7 +23,7 @@ if [ "$ADD" == "shiny" ]; then
     cd /etc/services.d/shiny-server && \
     echo '#!/bin/bash' > run && echo 'exec shiny-server' >> run && \
     chmod +x run && \
-    adduser rstudio shiny \
+    adduser rstudio shiny && \
     cd /
 fi
 

rstudio/3.4.0/add_shiny.sh

@@ -23,7 +23,7 @@ if [ "$ADD" == "shiny" ]; then
     cd /etc/services.d/shiny-server && \
     echo '#!/bin/bash' > run && echo 'exec shiny-server' >> run && \
     chmod +x run && \
-    adduser rstudio shiny \
+    adduser rstudio shiny && \
     cd /
 fi
 

rstudio/3.4.1/add_shiny.sh

@@ -23,7 +23,7 @@ if [ "$ADD" == "shiny" ]; then
     cd /etc/services.d/shiny-server && \
     echo '#!/bin/bash' > run && echo 'exec shiny-server' >> run && \
     chmod +x run && \
-    adduser rstudio shiny \
+    adduser rstudio shiny && \
     cd /
 fi
 

rstudio/add_shiny.sh

@@ -23,7 +23,7 @@ if [ "$ADD" == "shiny" ]; then
     cd /etc/services.d/shiny-server && \
     echo '#!/bin/bash' > run && echo 'exec shiny-server' >> run && \
     chmod +x run && \
-    adduser rstudio shiny \
+    adduser rstudio shiny && \
     cd /
 fi
 

rstudio/devel/add_shiny.sh

@@ -23,7 +23,7 @@ if [ "$ADD" == "shiny" ]; then
     cd /etc/services.d/shiny-server && \
     echo '#!/bin/bash' > run && echo 'exec shiny-server' >> run && \
     chmod +x run && \
-    adduser rstudio shiny \
+    adduser rstudio shiny && \
     cd /
 fi