nss-docker-ng-0.2.0 has been yanked.
Introduction
nss-docker-ng is a NSS plugin for finding Docker containers by their ID or name.
The container names are searched in a virtual domain name .docker.
Install it, then try:
$ docker run -d --name my-app my/app
04e8b7ccf6215a17064ec0d15d4235d5c62c461bc26a681c8ee64344bb0dc2df
$ getent hosts my-app.docker
172.17.0.4 my-app.docker
$ ping my-app.docker
PING test.docker (172.17.0.4) 56(84) bytes of data.
64 bytes from 172.17.0.4: icmp_seq=1 ttl=64 time=0.171 ms
Comparison
There are other options to achieve this feature. I'm comparing them HERE.
Installation instructions
cargo build --release && \
sudo install -m 0755 -d /opt/nss-docker-ng/ && \
sudo install -m 0644 target/release/libnss_docker_ng.so /opt/nss-docker-ng/libnss_docker_ng.so.2 && \
echo '/opt/nss-docker-ng' | sudo tee /etc/ld.so.conf.d/nss-docker-ng.conf > /dev/null && \
sudo /sbin/ldconfig
Add the docker_ng service to the hosts:-line in /etc/nsswitch.conf. For example:
hosts: files docker_ng dns
Development
cargo build && \
sudo install -m 0755 -d /opt/nss-docker-ng/ && \
sudo install -m 0644 target/debug/libnss_docker_ng.so /opt/nss-docker-ng/libnss_docker_ng.so.2 && \
echo '/opt/nss-docker-ng' | sudo tee /etc/ld.so.conf.d/nss-docker-ng.conf > /dev/null && \
sudo /sbin/ldconfig