Add test hooks with try-repo

.drone.yml

@@ -9,9 +9,8 @@ workspace:
 steps:
 
   - name: test
-    image: iamthefij/drone-pre-commit:latest
+    image: iamthefij/drone-pre-commit@sha256:6ed8dae6b0067bd2e145e36421bcfbbc68975ff7ddaa5a3f285b5bcdaf0989c8
     commands:
-      - pip install docker-compose
       - make all
 
   - name: notify

Makefile

@@ -2,7 +2,7 @@
 
 all: check test
 
-test: test-negative test-positive
+test: test-negative test-positive test-hooks
 
 .PHONY: test-positive
 test-positive:
@@ -16,6 +16,10 @@ test-negative:
 	@echo "Check multiple files. Should error."
 	./compose-check.sh tests/docker-compose* && { echo 'fail'; exit 1; } || echo 'ok'
 
+.PHONY: test-hooks
+test-hooks:
+	pre-commit try-repo . --all-files
+
 # Installs pre-commit hooks
 .PHONY: install-hooks
 install-hooks: