Added function to update docker-compose containers.

dot_bashrc.d/executable_09.functions.tmpl

@@ -127,6 +127,16 @@ deblist() {
 }
 {{- end }}
 
+# Docker helpers
+# Update docker-compose containers
+# https://stackoverflow.com/questions/49316462/how-to-update-existing-images-with-docker-compose
+dcupdate() {
+    # TODO: check when sudo is needed
+    docker-compose pull
+    docker-compose up -d
+    docker image prune
+    # TODO: logfile
+}
 
 
 PATH=$PATH:$HOME/bin