Separate nightly CI runs into a separate workflow. (#624)

.github/workflows/ci-nightly.yml

@@ -0,0 +1,55 @@
+name: CI Nightly
+
+on:
+  schedule:
+    - cron: "0 6 * * 1"
+  workflow_dispatch:
+
+jobs:
+  test:
+    name: Test
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - name: Install Crystal
+        uses: crystal-lang/install-crystal@v1
+        with:
+          crystal: nightly
+
+      - name: Download source
+        uses: actions/checkout@v3
+
+      - name: Install dependencies
+        run: shards install
+
+      - name: Run specs
+        run: crystal spec --error-on-warnings --error-trace
+
+      - name: Build the binary
+        run: shards build --error-on-warnings --error-trace
+
+      - name: Run core specs (Firefox)
+        working-directory: ./core/tests
+        run: ../../bin/mint test -b firefox
+
+      - name: Run core specs (Google Chrome)
+        working-directory: ./core/tests
+        run: ../../bin/mint test -b chrome
+
+      - name: Check formatting (Mint)
+        working-directory: ./core
+        run: ../bin/mint format --check
+
+      - name: Check formatting (Mint tests)
+        working-directory: ./core/tests
+        run: ../../bin/mint format --check
+
+      - name: Check formatting (Crystal)
+        run: crystal tool format --check
+
+      - name: Run ameba
+        run: bin/ameba

.github/workflows/ci.yml

@@ -7,8 +7,6 @@ on:
     types: [opened, synchronize, reopened]
   release:
     types: [published]
-  schedule:
-    - cron: "0 6 * * 1"
   workflow_dispatch:
 
 jobs:
@@ -18,14 +16,13 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, macos-latest]
-        crystal: [latest, nightly]
     runs-on: ${{ matrix.os }}
 
     steps:
       - name: Install Crystal
         uses: crystal-lang/install-crystal@v1
         with:
-          crystal: ${{ matrix.crystal }}
+          crystal: latest
 
       - name: Download source
         uses: actions/checkout@v3