Use docker to run tests. (#126)

.travis.yml

@@ -1,20 +1,11 @@
+sudo: required
+
 language: php
-php:
-  - 7.0.13
-  - 7.1
-  - 7.2
-install: composer install
-before_script:
-  - sudo apt-get build-dep curl
-  - pushd /tmp
-  - wget https://curl.haxx.se/download/curl-7.57.0.tar.bz2
-  - tar -xvjf curl-7.57.0.tar.bz2
-  - cd curl-7.57.0
-  - ./configure --with-ssl
-  - make
-  - sudo make install
-  - sudo ldconfig
-  - curl --version
-  - popd
 
-script: vendor/bin/paratest -p 2
+services:
+ - docker
+
+before_install:
+ - docker build -t sdk
+
+script: docker run sdk

Dockerfile

@@ -0,0 +1,10 @@
+FROM ubuntu:16.04
+
+RUN apt update && apt install -y php7.0 php7.0-curl php7.0-mbstring php7.0-xml composer wget tar bzip2
+
+RUN mkdir /sdk_php
+COPY . /sdk_php
+WORKDIR /sdk_php
+RUN composer install
+
+CMD vendor/bin/paratest -p 2