Add missing protocol, fix syntax warnings

Author: gocom

Dockerfile

@@ -1,6 +1,6 @@
 FROM composer:2.8.11 AS composer
 
-FROM php:8.4-cli as build
+FROM php:8.4-cli AS build
 
 COPY --from=composer /usr/bin/composer /usr/bin/composer
 
@@ -13,8 +13,8 @@ RUN apt-get update && apt-get install -y \
 RUN docker-php-ext-install zip
 RUN mkdir -p /composer && mkdir -p /compiler
 
-ENV COMPOSER_HOME /composer
-ENV COMPOSER_ALLOW_SUPERUSER 1
+ENV COMPOSER_HOME=/composer
+ENV COMPOSER_ALLOW_SUPERUSER=1
 
 ADD composer.json /compiler/composer.json
 ADD composer.lock /compiler/composer.lock

action.yml

@@ -21,7 +21,7 @@ outputs:
     description: 'Path to the compressed installer file, relative to workspace'
 runs:
   using: 'docker'
-  image: 'ghcr.io/gocom/action-textpattern-package-plugin:@master'
+  image: 'docker://ghcr.io/gocom/action-textpattern-package-plugin:@master'
 branding:
   icon: 'package'
   color: 'gray-dark'