build: verify buildability and documentation in CI.

Add missing verification for binary buildability and documentation.

Signed-off-by: Krisztian Litkey <[email protected]>

Makefile

@@ -130,7 +130,7 @@ allclean: clean clean-cache
 
 test: test-gopkgs
 
-verify: verify-godeps verify-fmt verify-generate
+verify: verify-godeps verify-fmt verify-generate verify-build verify-docs
 
 #
 # build targets
@@ -397,6 +397,10 @@ verify-generate: generate
 	    exit "$$ec"; \
 	fi
 
+verify-build: build
+
+verify-docs: docs
+
 #
 # targets for installing dependencies
 #