Rework CI and fix an error (#6)

.github/workflows/push.yml

@@ -3,8 +3,6 @@ name: Async TCP CI
 on:
   push:
     branches:
-    - master
-    - release/*
   pull_request:
 
 jobs:
@@ -14,19 +12,18 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest, macOS-latest]
+        os: [ubuntu-latest]
     steps:
-    - uses: actions/checkout@v1
-    - name: Build Tests
-      run: bash ./.github/scripts/on-push.sh 0 1
-
-  build-pio:
-    name: PlatformIO on ${{ matrix.os }}
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [ubuntu-latest, macOS-latest]
-    steps:
-    - uses: actions/checkout@v1
-    - name: Build Tests
-      run: bash ./.github/scripts/on-push.sh 1 1
+      - uses: actions/checkout@v3
+      - uses: arduino/setup-arduino-cli@v1
+      - name: Download board
+        run: |
+          arduino-cli --config-file arduino-cli.yaml core update-index
+          arduino-cli --config-file arduino-cli.yaml board listall
+          arduino-cli --config-file arduino-cli.yaml core install esp32:[email protected]
+      - name: Compile Sketch
+        run: arduino-cli --config-file arduino-cli.yaml --library ./src/ compile --fqbn esp32:esp32:esp32 ./examples/ClientServer/Client/Client.ino
+      - name: Compile Sketch with IPv6
+        env:
+          LWIP_IPV6: true
+        run: arduino-cli --config-file arduino-cli.yaml --library ./src/ compile --fqbn esp32:esp32:esp32 ./examples/ClientServer/Client/Client.ino