add release workflow for verifying release

also caches target folder

Author: Emilgardis

.github/workflows/ci.yml

@@ -38,7 +38,9 @@ jobs:
         uses: actions/cache@v1
         id: cache
         with:
-          path: ~/.cargo
+          path: | 
+            ~/.cargo
+            target
           key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
       - name: Test twitch_api2
         uses: actions-rs/cargo@v1
@@ -81,7 +83,9 @@ jobs:
         uses: actions/cache@v1
         id: cache
         with:
-          path: ~/.cargo
+          path: | 
+            ~/.cargo
+            target
           key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
       - name: Run clippy --all-targets --no-default-features -- -D warnings
         uses: actions-rs/clippy-check@v1
@@ -129,7 +133,9 @@ jobs:
         uses: actions/cache@v1
         id: cache
         with:
-          path: ~/.cargo
+          path: | 
+            ~/.cargo
+            target
           key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
       # We do the following to make sure docs.rs can document properly without anything broken, and that docs are working.
       - name: Run doc tests
@@ -141,4 +147,22 @@ jobs:
         uses: actions-rs/cargo@v1
         with:
           command: doc
-          args: --no-deps --features "${{ env.CI_TWITCH_API2_FEATURES }}" 
+          args: --no-deps --features "${{ env.CI_TWITCH_API2_FEATURES }}"
+  release:
+    name: Release
+    runs-on: ubuntu-latest
+    if: startsWith(github.head_ref, 'release-') || startsWith(github.ref, 'release-')
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          submodules: false
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: nightly
+          override: true
+      - name: Run dry run publish
+        uses: actions-rs/cargo@v1
+        with:
+          command: publish
+          args: --dry-run --features "${{ env.CI_TWITCH_OAUTH2_FEATURES }}"