update ci

.github/workflows/ci.yml

@@ -14,8 +14,8 @@ jobs:
 
     strategy:
       matrix:
-        elixir: [1.17.0]
-        otp: [27.0]
+        elixir: [1.18.1]
+        otp: [27.2]
 
     steps:
       - name: Checkout code
@@ -27,8 +27,30 @@ jobs:
           elixir-version: ${{ matrix.elixir }}
           otp-version: ${{ matrix.otp }}
 
-      - name: Install dependencies
-        run: mix deps.get
+      - name: Cache Elixir deps
+        uses: actions/cache@v1
+        id: deps-cache
+        with:
+          path: deps
+          key: ${{ runner.os }}-mix-${{ env.MIX_ENV }}-${{ hashFiles(format('{0}{1}', github.workspace, '/mix.lock')) }}
+
+      - name: Cache Elixir _build
+        uses: actions/cache@v1
+        id: build-cache
+        with:
+          path: _build
+          key: ${{ runner.os }}-build-${{ env.MIX_ENV }}-${{ matrix.otp }}-${{ matrix.elixir }}-${{ hashFiles(format('{0}{1}', github.workspace, '/mix.lock')) }}
+
+      - name: Install deps
+        if: steps.deps-cache.outputs.cache-hit != 'true'
+        run: |
+          mix local.rebar --force
+          mix local.hex --force
+          mix deps.get --only ${{ env.MIX_ENV }}
+
+      - name: Compile deps
+        if: steps.build-cache.outputs.cache-hit != 'true'
+        run: mix deps.compile --warnings-as-errors
 
       - name: Clean build
         run: mix clean