#3 Make PHP version configurable, default to 7.4

test-and-deploy.yml

 variables:
-  PHP_VERSION: 7.4
+  PHP_MAJOR_VERSION: 7
+  PHP_MINOR_VERSION: 4
 
 stages:
   - validation
@@ -69,7 +70,7 @@ stages:
   stage: validation
   tags:
     - default
-  image: registry.lakedrops.com/docker/gitlab-drupal-ci:php-${PHP_VERSION}
+  image: registry.lakedrops.com/docker/gitlab-drupal-ci:php-${PHP_MAJOR_VERSION}.${PHP_MINOR_VERSION}
   variables:
     GIT_STRATEGY: none
   script: |
@@ -117,7 +118,7 @@ stages:
   stage: buildprod
   tags:
     - default
-  image: registry.lakedrops.com/docker/gitlab-drupal-ci:php-${PHP_VERSION}
+  image: registry.lakedrops.com/docker/gitlab-drupal-ci:php-${PHP_MAJOR_VERSION}.${PHP_MINOR_VERSION}
   cache:
     <<: *cache_prod
     policy: pull-push
@@ -153,7 +154,7 @@ stages:
   stage: build
   tags:
     - default
-  image: registry.lakedrops.com/docker/gitlab-drupal-ci:php-${PHP_VERSION}
+  image: registry.lakedrops.com/docker/gitlab-drupal-ci:php-${PHP_MAJOR_VERSION}.${PHP_MINOR_VERSION}
   cache:
     <<: *cache_default
     policy: pull-push
@@ -226,7 +227,7 @@ stages:
   stage: prepare
   tags:
     - default
-  image: registry.lakedrops.com/docker/gitlab-drupal-ci:php-${PHP_VERSION}
+  image: registry.lakedrops.com/docker/gitlab-drupal-ci:php-${PHP_MAJOR_VERSION}.${PHP_MINOR_VERSION}
   variables:
     GIT_STRATEGY: none
   script: |
@@ -257,7 +258,7 @@ stages:
   stage: prepare
   tags:
     - default
-  image: registry.lakedrops.com/docker/gitlab-drupal-ci:php-${PHP_VERSION}
+  image: registry.lakedrops.com/docker/gitlab-drupal-ci:php-${PHP_MAJOR_VERSION}.${PHP_MINOR_VERSION}
   variables:
     GIT_STRATEGY: none
   script: |
@@ -284,7 +285,7 @@ stages:
   stage: prepare
   tags:
     - default
-  image: registry.lakedrops.com/docker/gitlab-drupal-ci:php-${PHP_VERSION}
+  image: registry.lakedrops.com/docker/gitlab-drupal-ci:php-${PHP_MAJOR_VERSION}.${PHP_MINOR_VERSION}
   variables:
     GIT_STRATEGY: none
   script:
@@ -310,7 +311,7 @@ stages:
   stage: test
   tags:
     - default
-  image: registry.lakedrops.com/docker/gitlab-drupal-ci:php-${PHP_VERSION}
+  image: registry.lakedrops.com/docker/gitlab-drupal-ci:php-${PHP_MAJOR_VERSION}.${PHP_MINOR_VERSION}
   variables:
     GIT_STRATEGY: none
   script: |
@@ -339,7 +340,7 @@ stages:
   stage: test
   tags:
     - default
-  image: registry.lakedrops.com/docker/gitlab-drupal-ci:php-${PHP_VERSION}
+  image: registry.lakedrops.com/docker/gitlab-drupal-ci:php-${PHP_MAJOR_VERSION}.${PHP_MINOR_VERSION}
   variables:
     GIT_STRATEGY: none
   script: |
@@ -372,7 +373,7 @@ stages:
   stage: test
   tags:
     - default
-  image: registry.lakedrops.com/docker/gitlab-drupal-ci:php-${PHP_VERSION}
+  image: registry.lakedrops.com/docker/gitlab-drupal-ci:php-${PHP_MAJOR_VERSION}.${PHP_MINOR_VERSION}
   variables:
     GIT_STRATEGY: none
   script: |
@@ -404,7 +405,7 @@ stages:
   stage: test
   tags:
     - default
-  image: registry.lakedrops.com/docker/gitlab-drupal-ci:php-${PHP_VERSION}
+  image: registry.lakedrops.com/docker/gitlab-drupal-ci:php-${PHP_MAJOR_VERSION}.${PHP_MINOR_VERSION}
   variables:
     GIT_STRATEGY: none
   script: |