Unable to install on Docker nginx image

[bmerigan]

Describe the bug

Cannot install this module into the official Docker nginx images.
Have tried both nginxinc/nginx-unprivileged:1.25.3 and nginx:1.25.3
Receive error message Unable to locate package nginx-module-otel when trying to build the Docker container, as shown below.

 > [gateway 2/9] RUN apt update && apt install nginx-module-otel:
0.831
0.831 WARNING: apt does not have a stable CLI interface. Use with caution in scripts.
0.831
1.185 Get:1 http://deb.debian.org/debian bookworm InRelease [151 kB]
1.330 Get:2 http://deb.debian.org/debian bookworm-updates InRelease [52.1 kB]
1.524 Get:3 http://deb.debian.org/debian-security bookworm-security InRelease [48.0 kB]
1.911 Get:4 http://deb.debian.org/debian bookworm/main amd64 Packages [8787 kB]
5.141 Get:5 http://deb.debian.org/debian bookworm-updates/main amd64 Packages [12.7 kB]
5.345 Get:6 http://deb.debian.org/debian-security bookworm-security/main amd64 Packages [134 kB]
10.69 Fetched 9185 kB in 10s (949 kB/s)
10.69 Reading package lists...
14.53 Building dependency tree...
16.01 Reading state information...
16.18 All packages are up to date.
16.23
16.23 WARNING: apt does not have a stable CLI interface. Use with caution in scripts.
16.23
16.24 Reading package lists...
20.54 Building dependency tree...
21.51 Reading state information...
21.56 E: Unable to locate package nginx-module-otel

To reproduce

Steps to reproduce the behavior:
Try to install this otel module in an official nginx Docker container using the most basic Dockerfile.

Dockerfile:

FROM nginx:1.25.3

RUN apt update \
&& apt install nginx-module-otel

CMD sh -c 'nginx -g "daemon off;"'

docker-compose up -d gateway --build

Expected behavior

I expect the module to install.

Your environment

nginx official docker image 1.25.3
https://hub.docker.com/layers/library/nginx/1.25.3/images/sha256-161ef4b1bf7effb350a2a9625cb2b59f69d54ec6059a8a155a1438d0439c593c?context=explore

Additional context

[thresheek]

Hi @bmerigan !

We're removing the sources.list entry when we finalize the dockerfile: https://github.com/nginxinc/docker-nginx/blob/master/mainline/debian/Dockerfile#L95

To install the otel module, you'd need to re-add the sources.list entry for the repo (no need for a key).

[bmerigan]

Ah, I see. I guess that's to keep sizes down and unlikely to change.
Thanks for the info.

[thresheek]

To be fair we didnt have any other request to change this behaviour, so yeah, unlikely to change.

In any case, I plan to have the official otel-enabled image published soon, so this issue will be fixed properly.

[bmerigan]

With the nudge in the right direction I have replaced the missing file and it installed ok.
And I'll keep a lookout for the new image.
Thanks.

[zakimaksyutov]

Here is the Dockerfile which successfully installs nginx-module-otel:

FROM nginx:1.25.3

RUN apt-get update ; apt-get install lsb-release --no-install-recommends --no-install-suggests -y

# This file is needed for nginx-module-otel to be found.
RUN echo "deb [signed-by=/usr/share/keyrings/nginx-archive-keyring.gpg] http://nginx.org/packages/mainline/debian `lsb_release -cs` nginx" | tee /etc/apt/sources.list.d/nginx.list

RUN apt-get update ; apt-get install nginx-module-otel --no-install-recommends --no-install-suggests -y

[klucsik]

I spent several hours on this already, would be nice to include this to the readme
@zakimaksyutov thank you for the dockerfile, it works

[thresheek]

FYI I've started a process to include the otel module as one of the variants of the official image: nginxinc/docker-nginx#871

I'll let you know when it's accepted & available.

[thresheek]

DockerHub image is live.

See https://hub.docker.com/_/nginx, namely "nginx:otel" and "nginx:alpine-otel" for the current tags.

[bmerigan]

Nice work @thresheek