GeezerVison

mark9064 left a comment

The first section explains how to clone the repository, the second how
to build Infinitime with the docker image, but the details on actually
provisioning the image are at the end, despite this step taking place
before the build itself.

Move the sections into the order in which the steps should be followed.

`docker build` warns of deprecated syntax:

    1 warning found (use docker --debug to expand):
    - LegacyKeyValueFormat: "ENV key=value" should be used instead of legacy "ENV key value" format (line 71)

Update Dockerfile, removing the deprecated syntax usage.

The docker build section points to another page with instructions on how
to clone the repository, but this same page already contains these same
instructions in the previous section.

The --user argument attempts to map the uid of the user inside the
container to the user in the host. This works if docker is running as
root, but is docker is running as the current user, then the uid in the
container is mapped to a surrogate uid on the host, and this surrogate
user does not have permissions to complete the build process.

Clarify that the --user flag is only required when running docker as
root. It is also likely not required by users using podman as a docker
drop-in replacement, since podman always runs in rootless mode.

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