Introduce templates and a PHP 7.0-based variant

[tianon]

Closes #106

[tianon]

$ ./update.sh
+ sed -r -e 's!%%WORDPRESS_VERSION%%!4.6.1!g' -e 's!%%WORDPRESS_SHA1%%!027e065d30a64720624a7404a1820e6c6fff1202!g' -e 's!%%PHP_VERSION%%!5.6!g' -e 's!%%VARIANT%%!apache!g' -e 's!%%VARIANT_EXTRAS%%!\nRUN a2enmod rewrite expires\n!g' -e 's!%%CMD%%!apache2-foreground!g' Dockerfile.template
+ cp docker-entrypoint.sh php5.6/apache/docker-entrypoint.sh
+ sed -r -e 's!%%WORDPRESS_VERSION%%!4.6.1!g' -e 's!%%WORDPRESS_SHA1%%!027e065d30a64720624a7404a1820e6c6fff1202!g' -e 's!%%PHP_VERSION%%!5.6!g' -e 's!%%VARIANT%%!fpm!g' -e 's!%%VARIANT_EXTRAS%%!!g' -e 's!%%CMD%%!php-fpm!g' Dockerfile.template
+ cp docker-entrypoint.sh php5.6/fpm/docker-entrypoint.sh
+ sed -r -e 's!%%WORDPRESS_VERSION%%!4.6.1!g' -e 's!%%WORDPRESS_SHA1%%!027e065d30a64720624a7404a1820e6c6fff1202!g' -e 's!%%PHP_VERSION%%!7.0!g' -e 's!%%VARIANT%%!apache!g' -e 's!%%VARIANT_EXTRAS%%!\nRUN a2enmod rewrite expires\n!g' -e 's!%%CMD%%!apache2-foreground!g' Dockerfile.template
+ cp docker-entrypoint.sh php7.0/apache/docker-entrypoint.sh
+ sed -r -e 's!%%WORDPRESS_VERSION%%!4.6.1!g' -e 's!%%WORDPRESS_SHA1%%!027e065d30a64720624a7404a1820e6c6fff1202!g' -e 's!%%PHP_VERSION%%!7.0!g' -e 's!%%VARIANT%%!fpm!g' -e 's!%%VARIANT_EXTRAS%%!!g' -e 's!%%CMD%%!php-fpm!g' Dockerfile.template
+ cp docker-entrypoint.sh php7.0/fpm/docker-entrypoint.sh

[tianon]

$ ./generate-stackbrew-library.sh
# this file is generated via https://github.com/docker-library/wordpress/blob/59bef72c8348e3e09e139c9a219cb0ee7a4612a3/generate-stackbrew-library.sh

Maintainers: Tianon Gravi <[email protected]> (@tianon),
             Joseph Ferguson <[email protected]> (@yosifkit)
GitRepo: https://github.com/docker-library/wordpress.git

Tags: 4.6.1-apache, 4.6-apache, 4-apache, apache, 4.6.1, 4.6, 4, latest, 4.6.1-php5.6, 4.6-php5.6, 4-php5.6, php5.6, 4.6.1-php5.6-apache, 4.6-php5.6-apache, 4-php5.6-apache, php5.6-apache
GitCommit: 59bef72c8348e3e09e139c9a219cb0ee7a4612a3
Directory: php5.6/apache

Tags: 4.6.1-fpm, 4.6-fpm, 4-fpm, fpm, 4.6.1-php5.6-fpm, 4.6-php5.6-fpm, 4-php5.6-fpm, php5.6-fpm
GitCommit: 59bef72c8348e3e09e139c9a219cb0ee7a4612a3
Directory: php5.6/fpm

Tags: 4.6.1-php7.0, 4.6-php7.0, 4-php7.0, php7.0, 4.6.1-php7.0-apache, 4.6-php7.0-apache, 4-php7.0-apache, php7.0-apache
GitCommit: 59bef72c8348e3e09e139c9a219cb0ee7a4612a3
Directory: php7.0/apache

Tags: 4.6.1-php7.0-fpm, 4.6-php7.0-fpm, 4-php7.0-fpm, php7.0-fpm
GitCommit: 59bef72c8348e3e09e139c9a219cb0ee7a4612a3
Directory: php7.0/fpm

[tianon]

$ diff -u <(bashbrew list wordpress | cut -d: -f2) <(bashbrew list <(./generate-stackbrew-library.sh) | cut -d: -f2)
--- /dev/fd/63  2016-10-06 13:01:48.058622142 -0700
+++ /dev/fd/62  2016-10-06 13:01:48.059622113 -0700
@@ -6,7 +6,31 @@
 4.6
 4
 latest
+4.6.1-php5.6
+4.6-php5.6
+4-php5.6
+php5.6
+4.6.1-php5.6-apache
+4.6-php5.6-apache
+4-php5.6-apache
+php5.6-apache
 4.6.1-fpm
 4.6-fpm
 4-fpm
 fpm
+4.6.1-php5.6-fpm
+4.6-php5.6-fpm
+4-php5.6-fpm
+php5.6-fpm
+4.6.1-php7.0
+4.6-php7.0
+4-php7.0
+php7.0
+4.6.1-php7.0-apache
+4.6-php7.0-apache
+4-php7.0-apache
+php7.0-apache
+4.6.1-php7.0-fpm
+4.6-php7.0-fpm
+4-php7.0-fpm
+php7.0-fpm