properly list php versions as strings

.github/workflows/ci.yml

@@ -17,9 +17,9 @@ jobs:
       matrix:
         include:
         - laravel: 9
-          php: 8.0
+          php: "8.0"
         - laravel: 10
-          php: 8.1
+          php: "8.1"
 
     steps:
     - uses: actions/checkout@v2

Dockerfile

@@ -17,9 +17,6 @@ RUN apt-get update \
     && apt-get update \
     && ACCEPT_EULA=Y apt-get install -y unixodbc-dev=2.3.7 unixodbc=2.3.7 odbcinst1debian2=2.3.7 odbcinst=2.3.7 msodbcsql17
 
-# temporary fix (the below step wasn't working properly on GH)
-RUN rm -f /etc/alternatives/php && sudo update-alternatives --install /usr/bin/php php /usr/bin/php$PHP_VERSION 1
-
 # set PHP version
 RUN update-alternatives --set php /usr/bin/php$PHP_VERSION \
     && update-alternatives --set phar /usr/bin/phar$PHP_VERSION \