php7 intl

[sergey_smiyan]

How install extension intl for bitbucket-pipelines with php7.1. 
I tried this config, but I got error 

image: php:7.1.1

definitions:
  caches:
    bundler: vendor

pipelines:
  default:
    - step:
        caches:
          - composer
        script:
          - cat /etc/*-release

          - apt-get update && apt-get install php7-intl

apt-get update && apt-get install php7-intl26s+ apt-get update && apt-get install php7-intl

...

Reading state information...

E: Unable to locate package php7-intl

[sergey_smiyan]

I found a good solution

replace this

image: php:7.1.1

for this

image: edbizarro/bitbucket-pipelines-php7