Goreleaser (#616) (#619)

* Goreleaser (#616)

* add goreleaser

* incl readme and license

* rm unnesesary license refs

* enable to test

* few changes to travis.yml to test goreleaser

* switch back to master

* try separate conditions

.goreleaser.yml

@@ -0,0 +1,31 @@
+builds:
+  -
+    goos:
+      - linux
+      - darwin
+      - windows
+    goarch:
+      - amd64
+    main: ./cmd/proxy/main.go
+    binary: athens-proxy
+    env:
+      - CGO_ENABLED=0
+archive:
+  name_template: '{{ .ProjectName }}_{{ .Version }}_{{ .Os }}_{{ .Arch }}{{ if .Arm
+    }}v{{ .Arm }}{{ end }}'
+  format: tar.gz
+  files:
+  - license*
+  - LICENSE*
+  - readme*
+  - README*
+checksum:
+  name_template: 'checksums.txt'
+snapshot:
+  name_template: SNAPSHOT-{{ .Commit }}
+changelog:
+  sort: asc
+  filters:
+    exclude:
+    - '^docs:'
+    - '^test:'

.travis.yml

@@ -13,6 +13,7 @@ env:
     - CODE_COV=1
     - ATHENS_DIR=${GOPATH}/src/github.com/gomods/athens
     - REGISTRY=gomods/
+    - GORELEASER_ON=1
   matrix:
     # remove this after Go1.12 ships
     - GO111MODULE=auto
@@ -38,8 +39,17 @@ before_deploy:
   - echo "$DOCKER_PASSWORD" | docker login -u "$DOCKER_USERNAME" --password-stdin
 
 deploy:
-  provider: script
-  script: make docker-push
-  on:
-    repo: gomods/athens
-    all_branches: true
+  - provider: script
+    script: make docker-push
+    on:
+      repo: gomods/athens
+      all_branches: true
+  - provider: script
+    skip_cleanup: true
+    script: curl -sL https://git.io/goreleaser | bash -s -- --snapshot
+    on:
+      repo: gomods/athens
+      branch: master
+      # tags: true 
+      condition: $GORELEASER_ON = 1
+      condition: $GO111MODULE = on