Docker Selfhosted Setup

[QuadStingray]

I want to host an Instance of weserv/images on my internal Kubernetes Cluster.

How can I setup an instance without any domain limitations and DNS Server from device usage, for example on local device based development.

docker run -d -p 8081:80 --shm-size=1gb --name=weserv ghcr.io/weserv/images:5.x

curl -v http://localhost:8081/\?url=http://host.docker.internal:8080/api/files/D8270076110FCEAE93FAC573CFBCC031F7B6A0FD

The curl doesn`t work with error.

{"status":"error","code":404,"message":"The hostname of the origin is unresolvable (DNS) or blocked by policy."}

If i connect to docker container this curl is working.

curl http://host.docker.internal:8080/api/files/D8270076110FCEAE93FAC573CFBCC031F7B6A0FD

An other question is how to disable caching on my self hosted instance?

Thanks for your help!

[kleisauke]

By default, Google's open DNS server (8.8.8.8) is used to resolve DNS queries. However, to resolve host.docker.internal, you may need to use Docker's embedded DNS server within the nginx configuration, see: https://github.com/weserv/images/issues/206#issuecomment-1752740666

To disable any caching, you can use the the imagesweserv-no-cache.conf config, see: https://github.com/weserv/images/issues/354#issuecomment-1221544455

The following Dockerfile combines these approaches:

# Usage: docker build --build-arg DNS_SERVER=127.0.0.11 -t weserv/images .
FROM ghcr.io/weserv/images:5.x

ARG DNS_SERVER=1.1.1.1

RUN cp ngx_conf/imagesweserv-no-cache.conf /etc/nginx/imagesweserv.conf \
    && sed -i "/resolver /s/[0-9].*/$DNS_SERVER;/" /etc/nginx/imagesweserv.conf

[QuadStingray]

Thanks! 👍🏻

[QuadStingray]

To set the DNS Server IP to 127.0.0.11 did not work for me. So I read the DNS Server now from /etc/resolv.conf on server startup.

So just for Documentation and if someone else has the same Issue here my Dockerfile:

FROM ghcr.io/weserv/images:5.x

RUN rm -rf /etc/nginx/imagesweserv.conf \
    && cp ngx_conf/imagesweserv-no-cache.conf /etc/nginx/imagesweserv.conf

CMD DNS_SERVER=$(cat /etc/resolv.conf | grep nameserver | awk '{print $2}' | head) ;\
    sed -i "/resolver /s/[0-9].*/$DNS_SERVER;/" /etc/nginx/imagesweserv.conf; \
    nginx -g "daemon off;"