Update workflow to use preprepared docker image

Clean up YML

Specify path for pio explicitly

.forgejo/workflows/compile.yml

@@ -5,17 +5,10 @@ jobs:
   Compile:
     runs-on: ubuntu-latest
     steps:
-      - name: Setup PlatformIO
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Compile
         run: |
-          apt update
-          apt -y install curl git python3 python3-pip
-          python3 -m pip install --upgrade pip
-          pip3 install -U platformio
-          pio upgrade --dev
-      - name: Setup node
-        run: |
-          curl -fsSL https://deb.nodesource.com/setup_20.x | bash -
-          apt-get install -y nodejs
-      - uses: actions/checkout@v3
-      - run: cd ${{ github.workspace }}
-      - run: pio run
+          cd ${{ github.workspace }}
+          /root/.platformio/penv/bin/pio run