fail on error (#20)

ci-via-github-actions

.github/main.workflow

@@ -7,7 +7,7 @@ action "check" {
   uses = "./.github/actions/check"
 }
 
-action "branch-filter" {
+action "release-filter" {
   needs = ["check"]
   uses = "actions/bin/filter@master"
   args = "tag v*"
@@ -15,7 +15,7 @@ action "branch-filter" {
 
 # only release on `v*` tags
 action "release" {
-  needs = ["branch-filter"]
+  needs = ["release-filter"]
   uses = "docker://goreleaser/goreleaser:v0.98"
   args = "release"
   secrets = ["GITHUB_TOKEN"]
@@ -27,3 +27,9 @@ action "build" {
   args = "--snapshot --rm-dist"
   secrets = ["SNAPSHOT_VERSION"]
 }
+
+# local action for `make vendor`
+action "vendor" {
+  uses = "docker://golang:1.11.4"
+  args = "go mod vendor"
+}