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diff --git a/_sources/admin/installation-docker.rst.txt b/_sources/admin/installation-docker.rst.txt new file mode 100644 index 000000000..09471891b --- /dev/null +++ b/_sources/admin/installation-docker.rst.txt @@ -0,0 +1,197 @@ +.. _installation docker: + +================ +Docker Container +================ + +.. _ENTRYPOINT: https://docs.docker.com/engine/reference/builder/#entrypoint +.. _searxng/searxng @dockerhub: https://hub.docker.com/r/searxng/searxng +.. _searxng-docker: https://github.com/searxng/searxng-docker +.. _[caddy]: https://hub.docker.com/_/caddy +.. _Redis: https://redis.io/ + +---- + +.. sidebar:: info + + - `searxng/searxng @dockerhub`_ + - :origin:`Dockerfile` + - `Docker overview <https://docs.docker.com/get-started/overview>`_ + - `Docker Cheat Sheet <https://docs.docker.com/get-started/docker_cheatsheet.pdf>`_ + - `Alpine Linux <https://alpinelinux.org>`_ + `(wiki) <https://en.wikipedia.org/wiki/Alpine_Linux>`__ + `apt packages <https://pkgs.alpinelinux.org/packages>`_ + - Alpine's ``/bin/sh`` is :man:`dash` + +**If you intend to create a public instance using Docker, use our well maintained +docker container** + +- `searxng/searxng @dockerhub`_. + +.. sidebar:: hint + + The rest of this article is of interest only to those who want to create and + maintain their own Docker images. + +The sources are hosted at searxng-docker_ and the container includes: + +- a HTTPS reverse proxy `[caddy]`_ and +- a Redis_ DB + +The `default SearXNG setup <https://github.com/searxng/searxng-docker/blob/master/searxng/settings.yml>`_ +of this container: + +- enables :ref:`limiter <limiter>` to protect against bots +- enables :ref:`image proxy <image_proxy>` for better privacy +- enables :ref:`cache busting <static_use_hash>` to save bandwidth + +---- + + +Get Docker +========== + +If you plan to build and maintain a docker image by yourself, make sure you have +`Docker installed <https://docs.docker.com/get-docker/>`_. On Linux don't +forget to add your user to the docker group (log out and log back in so that +your group membership is re-evaluated): + +.. code:: sh + + $ sudo usermod -a -G docker $USER + + +searxng/searxng +=============== + +.. sidebar:: ``docker run`` + + - `-\-rm <https://docs.docker.com/engine/reference/run/#clean-up---rm>`__ + automatically clean up when container exits + - `-d <https://docs.docker.com/engine/reference/run/#detached--d>`__ start + detached container + - `-v <https://docs.docker.com/engine/reference/run/#volume-shared-filesystems>`__ + mount volume ``HOST:CONTAINER`` + +The docker image is based on :origin:`Dockerfile` and available from +`searxng/searxng @dockerhub`_. Using the docker image is quite easy, for +instance you can pull the `searxng/searxng @dockerhub`_ image and deploy a local +instance using `docker run <https://docs.docker.com/engine/reference/run/>`_: + +.. code:: sh + + $ mkdir my-instance + $ cd my-instance + $ export PORT=8080 + $ docker pull searxng/searxng + $ docker run --rm \ + -d -p ${PORT}:8080 \ + -v "${PWD}/searxng:/etc/searxng" \ + -e "BASE_URL=http://localhost:$PORT/" \ + -e "INSTANCE_NAME=my-instance" \ + searxng/searxng + 2f998.... # container's ID + +The environment variables UWSGI_WORKERS and UWSGI_THREADS overwrite the default +number of UWSGI processes and UWSGI threads specified in `/etc/searxng/uwsgi.ini`. + +Open your WEB browser and visit the URL: + +.. code:: sh + + $ xdg-open "http://localhost:$PORT" + +Inside ``${PWD}/searxng``, you will find ``settings.yml`` and ``uwsgi.ini``. You +can modify these files according to your needs and restart the Docker image. + +.. code:: sh + + $ docker container restart 2f998 + +Use command ``container ls`` to list running containers, add flag `-a +<https://docs.docker.com/engine/reference/commandline/container_ls>`__ to list +exited containers also. With ``container stop`` a running container can be +stopped. To get rid of a container use ``container rm``: + +.. code:: sh + + $ docker container ls + CONTAINER ID IMAGE COMMAND CREATED ... + 2f998d725993 searxng/searxng "/sbin/tini -- /usr/…" 7 minutes ago ... + + $ docker container stop 2f998 + $ docker container rm 2f998 + +.. sidebar:: Warning + + This might remove all docker items, not only those from SearXNG. + +If you won't use docker anymore and want to get rid of all containers & images +use the following *prune* command: + +.. code:: sh + + $ docker stop $(docker ps -aq) # stop all containers + $ docker system prune # make some housekeeping + $ docker rmi -f $(docker images -q) # drop all images + + +shell inside container +---------------------- + +.. sidebar:: Bashism + + - `A tale of two shells: bash or dash <https://lwn.net/Articles/343924/>`_ + - `How to make bash scripts work in dash <http://mywiki.wooledge.org/Bashism>`_ + - `Checking for Bashisms <https://dev.to/bowmanjd/writing-bash-scripts-that-are-not-only-bash-checking-for-bashisms-and-testing-with-dash-1bli>`_ + +Like in many other distributions, Alpine's `/bin/sh +<https://wiki.ubuntu.com/DashAsBinSh>`__ is :man:`dash`. Dash is meant to be +`POSIX-compliant <https://pubs.opengroup.org/onlinepubs/9699919799>`__. +Compared to debian, in the Alpine image :man:`bash` is not installed. The +:origin:`dockerfiles/docker-entrypoint.sh` script is checked *against dash* +(``make tests.shell``). + +To open a shell inside the container: + +.. code:: sh + + $ docker exec -it 2f998 sh + + +Build the image +=============== + +It's also possible to build SearXNG from the embedded :origin:`Dockerfile`:: + + $ git clone https://github.com/searxng/searxng.git + $ cd searxng + $ make docker.build + ... + Successfully built 49586c016434 + Successfully tagged searxng/searxng:latest + Successfully tagged searxng/searxng:1.0.0-209-9c823800-dirty + + $ docker images + REPOSITORY TAG IMAGE ID CREATED SIZE + searxng/searxng 1.0.0-209-9c823800-dirty 49586c016434 13 minutes ago 308MB + searxng/searxng latest 49586c016434 13 minutes ago 308MB + alpine 3.13 6dbb9cc54074 3 weeks ago 5.61MB + + +Command line +============ + +.. sidebar:: docker run + + Use flags ``-it`` for `interactive processes + <https://docs.docker.com/engine/reference/run/#foreground>`__. + +In the :origin:`Dockerfile` the ENTRYPOINT_ is defined as +:origin:`dockerfiles/docker-entrypoint.sh` + +.. code:: sh + + docker run --rm -it searxng/searxng -h + +.. program-output:: ../dockerfiles/docker-entrypoint.sh -h |