docs: fix the variable reference for plugins where the alias does not match the variable
Closes dokku/dokku-postgres#199
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@@ -82,15 +82,15 @@ dokku mysql:create lolipop
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You can also specify the image and image version to use for the service. It *must* be compatible with the mysql image.
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```shell
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export DATABASE_IMAGE="mysql"
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export DATABASE_IMAGE_VERSION="${PLUGIN_IMAGE_VERSION}"
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export MYSQL_IMAGE="mysql"
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export MYSQL_IMAGE_VERSION="${PLUGIN_IMAGE_VERSION}"
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dokku mysql:create lolipop
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```
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You can also specify custom environment variables to start the mysql service in semi-colon separated form.
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```shell
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export DATABASE_CUSTOM_ENV="USER=alpha;HOST=beta"
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export MYSQL_CUSTOM_ENV="USER=alpha;HOST=beta"
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dokku mysql:create lolipop
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```
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