Build and Publish Nightly Rust

Problem
Nighlty Rust is updated every night!
Solution
 - Action runs each night at 0200 UTC
 - Action can be dispatched from console
 - Run test job and make with environment set to use and tag nigthly
 - Run publsh job on successful test with nightly
 - Only run publish on rust-serverless repo
 - Publish issue if publication fails
Note
Not configured to run security scan (part of seperate PR).

Author: jerusdp

.github/workflows/nightly.yml

@@ -6,15 +6,27 @@ on:
     - cron: '0 2 * * 3'
 
 jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - run: make test
+        env:
+          RUST_VERSION: nightly
+          TAG: nightly
   publish:
+    needs: [test]
+    if: github.repository == "rust-serverless/lambda-rust"
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-        name: Build Nightly Rust
-      - run: make nightly
+      - run: make publish
+        env:
+          RUST_VERSION: nightly
+          TAG: nightly
   create_issue:
     runs-on: ubuntu-latest
-    needs: check
+    needs: [publish]
     if: always() && (needs.publish.result == 'failure')
     steps:
       - run: gh issue create --title "Nightly publication failed" --body "Nightly publication failed" --label "bug" -R $GITHUB_REPOSITORY