Hi Udara, I tried method #2 and when I checked the running container created from the built image, but the host entry was not added. Method #2 only works when I set the host entry and then use the host entry in the same line, as I have shown above. Any RUN command executed after the above RUN command would create a new intermediate container thus creating a new /etc/hosts file.
Thanks and Regards. On Fri, Jul 8, 2016 at 5:42 PM, Udara Liyanage <[email protected]> wrote: > > > On Fri, Jul 8, 2016 at 7:49 AM, Sabra Ossen <[email protected]> wrote: > >> Hi All, >> >> I am trying to add a host entry to /etc/hosts inside of a docker image >> built from a dockerfile. An extensive search resulted in the following >> results. >> >> 1. Add the host entry at runtime using command, >> *docker run -it --add-host myhost:192.168.18.2 <image-id> /bin/bash* >> This method only makes the host entry available in the running >> container and not in the image resulting after a docker build. >> 2. Add "RUN echo "192.168.11.112 myhost" >> /etc/hosts && wget >> http://myhost"; to the docker file. With each RUN command a new >> intermediate container will be created. This method only allows the host >> entry available in the intermediate container. >> > I think this method will work. > What do you mean by available only to intermediate container. If you add > above RUN command it will persist in the final docker image, isn't it? > >> >> Many methods allow the host entry to be available only from a container >> level vs image level. Any known clean method for $subject. >> >> Thanks and Regards. >> -- >> *Sabra Ossen* >> *Software Engineer* >> Email: [email protected] >> Mobile: +94 767 837356 >> >> _______________________________________________ >> Dev mailing list >> [email protected] >> http://wso2.org/cgi-bin/mailman/listinfo/dev >> >> > > > -- > > Udara Liyanage > Software Engineer > WSO2, Inc.: http://wso2.com > lean. enterprise. middleware > > web: http://udaraliyanage.wordpress.com > phone: +94 71 443 6897 > -- *Sabra Ossen* *Software Engineer* Email: [email protected] Mobile: +94 767 837356
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