Update to PHP 7.1.18, Uuid 3.7.3 & Guzzle 6.3.3 (#27)

* Upgrade to PHP 7.1.18
* Remove empty continuation lines in Dockerfile
* guzzlehttp/guzzle => 6.3.3, ramsey/uuid => 3.7.3

diff --git a/core/php7.1Action/CHANGELOG.md b/core/php7.1Action/CHANGELOG.md
new file mode 100644
index 0000000..57ff219
--- /dev/null
+++ b/core/php7.1Action/CHANGELOG.md
@@ -0,0 +1,44 @@
+<!--
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+-->
+
+## 1.0.1
+
+- Change: Update PHP to 7.1.18
+- Change: Update [guzzlehttp/guzzle](https://packagist.org/packages/guzzlehttp/guzzle) to 6.3.3
+- Change: Update [ramsey/uuid](https://packagist.org/packages/ramsey/uuid) to 3.7.3
+
+## 1.0.0
+Initial release
+
+- Added: PHP: 7.1.9
+- Added: PHP extensions in addition to the standard ones:
+    - bcmath
+    - curl
+    - gd
+    - intl
+    - mbstring
+    - mysqli
+    - pdo_mysql
+    - pdo_pgsql
+    - pdo_sqlite
+    - soap
+    - zip
+- Added: Composer packages:
+    - [guzzlehttp/guzzle](https://packagist.org/packages/guzzlehttp/guzzle): 6.3.0
+    - [ramsey/uuid](https://packagist.org/packages/ramsey/uuid): 3.6.1
diff --git a/core/php7.1Action/Dockerfile b/core/php7.1Action/Dockerfile
index dc6661f..d451144 100644
--- a/core/php7.1Action/Dockerfile
+++ b/core/php7.1Action/Dockerfile
@@ -15,12 +15,10 @@
 # limitations under the License.
 #
 
-FROM php:7.1-alpine
+FROM php:7.1.18-alpine
 
 RUN \
-
     apk update && apk upgrade && \
-
     # install dependencies
    apk add \
        postgresql-dev \
@@ -31,9 +29,7 @@
        libjpeg-turbo-dev \
        libpng-dev \
        libxml2-dev \
-
    && \
-
    # install useful PHP extensions
    docker-php-ext-install \
        opcache \
diff --git a/core/php7.1Action/composer.json b/core/php7.1Action/composer.json
index 5aaa8fc..5ae09fb 100644
--- a/core/php7.1Action/composer.json
+++ b/core/php7.1Action/composer.json
@@ -5,7 +5,7 @@
         }
     },
     "require": {
-        "guzzlehttp/guzzle": "^6.3",
-        "ramsey/uuid": "^3.6"
+        "guzzlehttp/guzzle": "6.3.3",
+        "ramsey/uuid": "3.7.3"
     }
 }