Get list of installed drivers

Signed-off-by: Antonio Navarro Perez <[email protected]>

Author: ajnavarro

.travis.yml

@@ -23,6 +23,7 @@ before_install:
 
 before_script:
   - docker run -d --name bblfshd --privileged -p 9432:9432 -v /var/lib/bblfshd:/var/lib/bblfshd bblfsh/bblfshd:v2.14.0-drivers
+  - docker exec -it bblfshd bblfshctl driver list
   - go get -v github.com/go-sql-driver/mysql/...
   - go get gopkg.in/src-d/go-git-fixtures.v3/...