Get shellcheck working for the bin/ scripts

.drone.yml

@@ -6,6 +6,7 @@ steps:
     image: koalaman/shellcheck-alpine:v0.7.1
     commands:
       - shellcheck abra
+      - shellcheck bin/*.sh
 
   - name: run unit tests
     image: decentral1se/docker-dind-bats-kcov

makefile

@@ -21,7 +21,8 @@ shellcheck:
 		--rm \
 		-v $$(pwd):/workdir \
 		koalaman/shellcheck-alpine \
-		shellcheck /workdir/abra
+		shellcheck /workdir/abra && \
+		shellsheck /workdir/bin/*.sh
 
 docopt:
 	@if [ ! -d ".venv" ]; then \