add support for 'reuse' mode to allow act to be used for a fast local task runner

.github/actions/check/Dockerfile

@@ -1,10 +1,6 @@
-FROM golang:1.11.4-stretch
-
-RUN go get -u honnef.co/go/tools/cmd/staticcheck
-RUN go get -u golang.org/x/lint/golint
-RUN go get -u github.com/fzipp/gocyclo
+FROM golangci/golangci-lint:v1.12.5
 
 COPY "entrypoint.sh" "/entrypoint.sh"
 RUN chmod +x /entrypoint.sh
 
-ENTRYPOINT ["/entrypoint.sh"]
+ENTRYPOINT ["/entrypoint.sh"]

.github/actions/check/entrypoint.sh

@@ -1,10 +1,4 @@
 #!/bin/sh 
 
-#GOPATH=/go
-#PATH=${GOPATH}/bin:/usr/local/go/bin:${PATH}
-
-go vet ./...
-golint -set_exit_status ./...
-staticcheck ./...
-gocyclo -over 10 .
+golangci-lint run
 go test -cover ./...

.github/main.workflow

@@ -7,15 +7,21 @@ action "check" {
   uses = "./.github/actions/check"
 }
 
- action "branch-filter" {
+action "branch-filter" {
   needs = ["check"]
   uses = "actions/bin/filter@master"
   args = "tag v*"
- }
+}
 
- action "release" {
+action "release" {
   needs = ["branch-filter"]
   uses = "docker://goreleaser/goreleaser:v0.97"
   args = "release"
   secrets = ["GITHUB_TOKEN"]
- }
+}
+
+action "build" {
+  uses = "docker://goreleaser/goreleaser:v0.97"
+  args = "--snapshot --rm-dist"
+  secrets = ["SNAPSHOT_VERSION"]
+}