Fix composer setup

Author: rcarvello

.github/workflows/install-test.yaml

@@ -41,16 +41,18 @@ jobs:
 
       - name: Install Composer
         run: |
-          EXPECTED_CHECKSUM="$(php -r 'copy(\"https://composer.github.io/installer.sig\", \"php://stdout\");')"
-          php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
-          ACTUAL_CHECKSUM="$(php -r \"echo hash_file('sha384', 'composer-setup.php');\")"
+          EXPECTED_CHECKSUM="$(php -r 'copy("https://composer.github.io/installer.sig", "php://stdout");')"
+          php -r 'copy("https://getcomposer.org/installer", "composer-setup.php");'
+          ACTUAL_CHECKSUM="$(php -r 'echo hash_file("sha384", "composer-setup.php");')"
+          
           if [ "$EXPECTED_CHECKSUM" != "$ACTUAL_CHECKSUM" ]; then
-              >&2 echo 'ERROR: Invalid composer installer checksum'
-              exit 1
+            >&2 echo 'ERROR: Invalid composer installer checksum'
+            rm composer-setup.php
+            exit 1
           fi
+          
           php composer-setup.php --install-dir=/usr/local/bin --filename=composer
           rm composer-setup.php
-
       - name: Wait for MySQL
         run: |
           for i in {1..10}; do