Run tests on 32-bit PHP

Author: BenMorel

.github/workflows/ci.yml

@@ -107,9 +107,6 @@ jobs:
   phpunit-32bit:
     name: PHPUnit (32-bit)
     runs-on: ubuntu-latest
-    container:
-      image: php:8.5-cli
-      options: --platform linux/386
 
     strategy:
       fail-fast: false
@@ -123,21 +120,17 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Install dependencies
-        run: |
-          apt-get update
-          apt-get install -y libgmp-dev unzip
-          docker-php-ext-install gmp bcmath > /dev/null
-
-      - name: Install composer dependencies
-        uses: ramsey/composer-install@v3
-
-      - name: Ensure 32-bit
-        run: |
-          php -r 'echo "PHP_INT_SIZE=", PHP_INT_SIZE, "\n";'
-          php -r 'exit(PHP_INT_SIZE === 4 ? 0 : 1);'
-
       - name: Run PHPUnit
-        run: vendor/bin/phpunit
-        env:
-          CALCULATOR: ${{ matrix.calculator }}
+        run: |
+          docker run --platform linux/386 --rm \
+            -v ${{ github.workspace }}:/app \
+            -w /app \
+            -e CALCULATOR=${{ matrix.calculator }} \
+            php:8.5-cli bash -c "\
+              apt-get update && \
+              apt-get install -y libgmp-dev unzip && \
+              docker-php-ext-install gmp bcmath > /dev/null && \
+              curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer && \
+              composer install --no-interaction && \
+              php -r 'echo \"PHP_INT_SIZE=\", PHP_INT_SIZE, \"\n\"; exit(PHP_INT_SIZE === 4 ? 0 : 1);' && \
+              vendor/bin/phpunit"