diff --git a/.env b/.env
index 82c5ef508f..5acb3b585f 100644
--- a/.env
+++ b/.env
@@ -10,8 +10,8 @@ DATABASE_PASSWORD=SetYourOwnPassword
 DATABASE_NAME=ezp
 
 ## Docker images (name and version)
-PHP_IMAGE=ezsystems/php:7.1-v1
-PHP_IMAGE_DEV=ezsystems/php:7.1-v1-dev
+PHP_IMAGE=ezsystems/php:7.2-v1
+PHP_IMAGE_DEV=ezsystems/php:7.2-v1-dev
 NGINX_IMAGE=nginx:stable
 MYSQL_IMAGE=healthcheck/mariadb
 SELENIUM_IMAGE=selenium/standalone-chrome-debug:3.4.0
diff --git a/.platform.app.yaml b/.platform.app.yaml
index 6ffa87f1ef..68eab56d93 100644
--- a/.platform.app.yaml
+++ b/.platform.app.yaml
@@ -8,7 +8,7 @@
 name: app
 
 # The type of the application to build.
-type: php:7.1
+type: php:7.2
 build:
     # "none" means we're running composer manually, see build hook
     flavor: "none"
@@ -25,6 +25,8 @@ relationships:
     # If you wish to have a separate Redis instance for sessions, uncomment
     # this relationship and the corresponding service in .platform/services.yaml
     #redissession: 'redissession:redis'
+    # If you wish to use solr, uncomment this relationship and the corresponding service in .platform/services.yaml
+    #solr: 'solrsearch:solr'
 
 variables:
     #php:
diff --git a/.platform/services.yaml b/.platform/services.yaml
index 9ee8b931b3..616be0e1ee 100644
--- a/.platform/services.yaml
+++ b/.platform/services.yaml
@@ -31,3 +31,21 @@ rediscache:
 #redissession:
 #    type: redis-persistent:3.2
 #    disk: 1024
+
+# If you wish to use solr, uncomment this service and the corresponding relationship in .platform.app.yaml.
+# Also, you need to generate the config using:
+# vendor/ezsystems/ezplatform-solr-search-engine/bin/generate-solr-config.sh
+#solrsearch:
+#    type: solr:6.6
+#    disk: 512
+#    configuration:
+#        configsets:
+#            mainconfig: !archive "configsets/solr6"
+#        cores:
+#            collection1:
+#                core_properties: |
+#                    configSet=mainconfig
+#                    schema=schema.xml
+#        endpoints:
+#            collection1:
+#                core: collection1
diff --git a/app/config/env/platformsh.php b/app/config/env/platformsh.php
index 17da9fc5a0..86b831f06d 100644
--- a/app/config/env/platformsh.php
+++ b/app/config/env/platformsh.php
@@ -119,3 +119,14 @@
         $container->setParameter('session.save_path', sprintf('%s:%d', $endpoint['host'], $endpoint['port']));
     }
 }
+
+if (isset($relationships['solr'])) {
+    foreach ($relationships['solr'] as $endpoint) {
+        if ($endpoint['scheme'] !== 'solr') {
+            continue;
+        }
+
+        $container->setParameter('search_engine', 'solr');
+        $container->setParameter('solr_dsn', sprintf('http://%s:%d/%s', $endpoint['host'], $endpoint['port'], 'solr'));
+    }
+}
diff --git a/doc/docker/Dockerfile-app b/doc/docker/Dockerfile-app
index 03773bfc31..ca1fc68865 100644
--- a/doc/docker/Dockerfile-app
+++ b/doc/docker/Dockerfile-app
@@ -1,4 +1,5 @@
-FROM ezsystems/php:7.1-v1 as builder
+ARG PHP_IMAGE=ezsystems/php:7.2-v1
+FROM ${PHP_IMAGE} as builder
 
 # This is prod image (for dev use just mount your application as host volume into php image we extend here)
 ENV SYMFONY_ENV=prod
@@ -26,7 +27,7 @@ RUN rm -Rf app/logs/* app/cache/*/*
 RUN rm -rf web/css web/fonts web/js web/var
 
 
-FROM ezsystems/php:7.1-v1
+FROM ${PHP_IMAGE}
 
 # This is prod image (for dev use just mount your application as host volume into php image we extend here)
 ENV SYMFONY_ENV=prod
diff --git a/doc/docker/Dockerfile-nginx b/doc/docker/Dockerfile-nginx
index 37e4c73f84..181fc10d13 100644
--- a/doc/docker/Dockerfile-nginx
+++ b/doc/docker/Dockerfile-nginx
@@ -1,4 +1,5 @@
-FROM ezsystems/php:7.1-v1 as web-build
+ARG PHP_IMAGE=ezsystems/php:7.2-v1
+FROM ${PHP_IMAGE} as web-build
 
 ENV SYMFONY_ENV=prod
 
diff --git a/doc/docker/base-prod.yml b/doc/docker/base-prod.yml
index a9bc3cf358..0d197943a7 100644
--- a/doc/docker/base-prod.yml
+++ b/doc/docker/base-prod.yml
@@ -6,6 +6,8 @@ services:
     build:
       context: ../../
       dockerfile: ${APP_DOCKER_FILE}
+      args:
+       - PHP_IMAGE
     depends_on:
      - db
     environment:
@@ -30,6 +32,8 @@ services:
     build:
       context: ../../
       dockerfile: doc/docker/Dockerfile-nginx
+      args:
+       - PHP_IMAGE
     depends_on:
      - app
     ports:
diff --git a/doc/docker/distribution.yml b/doc/docker/distribution.yml
index 7cb28fe4fb..5a2225372a 100644
--- a/doc/docker/distribution.yml
+++ b/doc/docker/distribution.yml
@@ -14,7 +14,7 @@ services:
      - backend
 
   app:
-    image: ezsystems/php:7.1-v1
+    image: ${PHP_IMAGE}
     depends_on:
      - db
      - distribution
@@ -39,7 +39,7 @@ services:
      - vardir:/var/www/web/var
 
   web:
-    image: nginx:stable
+    image: ${NGINX_IMAGE}
     depends_on:
      - distribution
      - app
diff --git a/web/app.php b/web/app.php
index 8ae8d95335..bf261f9c30 100644
--- a/web/app.php
+++ b/web/app.php
@@ -18,12 +18,12 @@
     $useDebugging = $environment === 'dev';
 }
 
-// Depending on SYMFONY_CLASSLOADER_FILE use custom class loader, otherwise use bootstrap cache, or autoload in debug
+// Depending on SYMFONY_CLASSLOADER_FILE use custom class loader, otherwise use normal autoload and optionally bootstrap cache on PHP 5 when not in debug mode
 if ($loaderFile = getenv('SYMFONY_CLASSLOADER_FILE')) {
     require_once $loaderFile;
 } else {
     require_once __DIR__ . '/../app/autoload.php';
-    if (!$useDebugging) {
+    if (!$useDebugging && PHP_VERSION_ID < 70000) {
         require_once __DIR__ . '/../app/bootstrap.php.cache';
     }
 }