expose "&{ ... <nil> }"

[yosifkit]

Thanks @tianon 😜

"created_by": "EXPOSE &{[{{103 0} {103 0}}] <nil>}",

oci.dag.dev renders this as an unescaped <nil> element when viewing the "pretty printed" version (line or whole history). There is a buildkit bug filed for the bad value in created_by for EXPOSE: moby/buildkit#6217.

curl:
<pre>EXPOSE &{[{{103 0} {103 0}}] <nil>}</pre>

browser inspect:
<pre>EXPOSE &amp;{[{{103 0} {103 0}}] <nil>}</nil></pre>

• image config
• expose line "pretty print"