[skip changelog] fix archive name for nightly builds (#387)

* [skip changelog] fix archive name for nightly builds

Author: Massimiliano Pippi

Diff for: .github/workflows/nightly.yaml

@@ -20,6 +20,8 @@ jobs:
         uses: actions/checkout@v1
 
       - name: build
+        env:
+          PACKAGE_NAME_PREFIX: ${{ github.workflow }}
         run: goreleaser --snapshot
 
       - name: upload

Diff for: .goreleaser.yml

@@ -3,7 +3,7 @@ checksum:
   name_template: '{{ .Tag }}-{{ time "20060102" }}-checksums.txt'
 
 snapshot:
-  name_template: '{{ .Tag }}-{{ time "20060102" }}'
+  name_template: '{{ .Env.PACKAGE_NAME_PREFIX }}-{{ time "20060102" }}'
 
 release:
   prerelease: auto