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From: Guido Trotter <ultrotter@debian.org>
Date: Tue, 9 Dec 2025 07:24:18 +0000
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Message-ID: <CAM4p=JO0d_hGiO=u7oDcse+fkkCyo+uLouq3vb+FLBcuoVO50A@mail.gmail.com>
Subject: Re: running containers (Podman or Docker) in diskless mode ?
To: Jerome Marc <marcgruselle@gmail.com>
Cc: ~alpine/users@lists.alpinelinux.org
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If you're running just a container it should depend on what process you run
in the container... You wouldn't need to run "the os" necessarily, so using
read only would work if your process never writes to disk. In some cases
you might not need an os image at all.

On Tue, 9 Dec 2025, 01:26 Jerome Marc, <marcgruselle@gmail.com> wrote:

> Hello,
>
> I would like to deploy a small container on my RPI.
> The OS is running in diskless mode (lbu) and I have a quite large data
> partition which is read-only.
> I use the data partition to store large stuff like node libraries.
>
> By the way I was expecting to be able to start a container from this
> read-only partition. As the container is immutable I don't see any reason
> to make the partition rw, except of course when updating the docker image.
> So does anyone tried (and hopefully succeeded) to run a container that way ?
>
> Thank you.
>
>
>

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<div dir=3D"auto">If you&#39;re running just a container it should depend o=
n what process you run in the container... You wouldn&#39;t need to run &qu=
ot;the os&quot; necessarily, so using read only would work if your process =
never writes to disk. In some cases you might not need an os image at all.<=
/div><br><div class=3D"gmail_quote gmail_quote_container"><div dir=3D"ltr" =
class=3D"gmail_attr">On Tue, 9 Dec 2025, 01:26 Jerome Marc, &lt;<a href=3D"=
mailto:marcgruselle@gmail.com">marcgruselle@gmail.com</a>&gt; wrote:<br></d=
iv><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;bord=
er-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir=3D"ltr">Hello=
,<br><div><br></div><div>I would like to deploy a small container on my RPI=
.</div><div>The=C2=A0OS is running in diskless mode (lbu) and I have a quit=
e=C2=A0large data partition which is read-only.</div><div>I use the data pa=
rtition to store large stuff=C2=A0like node libraries.</div><div><br></div>=
<div>By the way I was expecting to be able to start a container from this r=
ead-only partition. As the container is immutable I don&#39;t see any reaso=
n to make the partition rw, except of course when updating the docker image=
. So does anyone tried (and hopefully succeeded) to run a container that wa=
y ?</div><div><br></div><div>Thank you.</div><div><br></div><div><br></div>=
</div>
</blockquote></div>

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