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[enh] container: tidy builds (#5086)

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Building the container currently does not work properly.
When rebuilding several times with `make container`, `version_frozen.py`
is recreated, which wouldn't be an issue if the file’s timestamp was constant.
Now, when creating `version_frozen.py`, it will have the same timestamp as the
commit when it was created. (`version_frozen.py` is moved to a dedicated layer).

Reusing "builder" cache when building "dist" could be slow
(CD reports 2 seconds, but locally I've seen it take up to 10 seconds),
so the Dockerfile is now split and we save a couple steps
by importing the "builder" image directly.

The last changes made it possible to remove the layer cache in "builder",
since the overhead is now greater than building the layers from scratch.

Until now, all "dist" layers were squashed into a single layer,
which in most cases is a good idea
(except for storage/delivery pricing/overhead), but in our case,
since we manage the entire pipeline, we can ignore this
and share layers between builds.
This means (for example) that if we change files unrelated to the container
in several consecutive commits (documentation changes), we don't have to push
the entire image to registry, but only the different layers
(`version_frozen.py` in this example).
The same applies when pulling, as only the layers that have changed
compared to the local layers will be downloaded (that's the theory,
we'll see if this works as expected or if we need to tweak something else).
This commit is contained in:
Ivan Gabaldon 2025-08-07 10:46:26 +02:00 • committed by GitHub
parent 94256e3383
commit 3de7a6da2d
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11 changed files with 105 additions and 148 deletions
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18
docs/admin/installation-docker.rst
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@ -80,7 +80,7 @@ Pull the latest image:
.. code:: sh
$ docker pull docker.io/searxng/searxng:2025.6.3-b73ac81
$ docker pull docker.io/searxng/searxng:2025.8.1-3d96414
.. _Container instancing:
@ -119,14 +119,14 @@ List running containers:
$ docker container list
CONTAINER ID IMAGE ... CREATED PORTS NAMES
37f6487c8703 ... ... 3 minutes ago 0.0.0.0:8888->8080/tcp searxng
1af574997e63 ... ... 3 minutes ago 0.0.0.0:8888->8080/tcp searxng
Access the container shell (troubleshooting):
.. code:: sh
$ docker container exec -it --user root searxng /bin/sh -l
37f6487c8703:/usr/local/searxng#
1af574997e63:/usr/local/searxng#
Stop and remove the container:
@ -182,9 +182,9 @@ container images are not officially supported):
$ make container
$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
localhost/searxng/searxng latest b14e256bfc36 14 seconds ago 201 MB
localhost/searxng/searxng 2025.5.1-b653119ab-dirty b14e256bfc36 14 seconds ago 201 MB
localhost/searxng/searxng builder 7f334c752b41 20 seconds ago 765 MB
ghcr.io/searxng/base searxng-builder 7d6b8a1bed4a 20 hours ago 625 MB
ghcr.io/searxng/base searxng 29baf9ef13ef 20 hours ago 62.5 MB
REPOSITORY TAG IMAGE ID CREATED SIZE
localhost/searxng/searxng 2025.8.1-3d96414 ... About a minute ago 183 MB
localhost/searxng/searxng latest ... About a minute ago 183 MB
localhost/searxng/searxng builder ... About a minute ago 524 MB
ghcr.io/searxng/base searxng-builder ... 2 days ago 378 MB
ghcr.io/searxng/base searxng ... 2 days ago 42.2 MB