Docker PHP (with OCI8 support) base image definition set up with day-to-day PHP development tools.
In your Dockerfile, use the following as the first line to build on this base image:
FROM fabrizzio/docker-php-oci8
When running a container based on this base image, the /etc/tnsnames.ora has to be mounted at runtime using the -v flag:
docker run -v /etc/tnsnames.ora:/etc/tnsnames.ora fabrizzio/docker-php-oci8