Fix keybase.io infinite loop: install function recursively calls itself

[Copilot]

The install() bash function in src/keybase.io/install.sh called install -m 0755 /dev/stdin /usr/local/bin/keybase internally — but bash resolves function names before external commands, so this recursively re-entered install() instead of calling /usr/bin/install, causing an infinite loop.

Changes

• src/keybase.io/install.sh: Replace bare install with command install to explicitly invoke the external binary and bypass bash's function lookup.

# Before — triggers infinite recursion
dpkg-deb --fsys-tarfile "/tmp/${deb_file}" \
    | tar -xO ./usr/bin/keybase \
    | install -m 0755 /dev/stdin /usr/local/bin/keybase

# After — calls /usr/bin/install directly
dpkg-deb --fsys-tarfile "/tmp/${deb_file}" \
    | tar -xO ./usr/bin/keybase \
    | command install -m 0755 /dev/stdin /usr/local/bin/keybase

Original prompt

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This section details on the original issue you should resolve

<issue_title>Feature keybase.io seems to be stuck in an infinite loop during test</issue_title>
<issue_description>https://github.com/devcontainer-community/devcontainer-features/actions/runs/23385754270/job/68032428477#step:4:6342</issue_description>

Comments on the Issue (you are @copilot in this section)

@sebst ``` #14 677.7 tar: Error is not recoverable: exiting now [2026-03-21T18:34:02.058Z] #14 678.3 dpkg-deb (subprocess): cannot copy archive member from '/tmp/keybase_amd64.deb' to decompressor pipe: unexpected end of file or stream [2026-03-21T18:34:02.242Z] #14 678.5 dpkg-deb (subprocess): decompressing archive '/tmp/keybase_amd64.deb' (size=157060932) member 'data.tar': lzma error: internal error (bug) [2026-03-21T18:34:02.407Z] #14 678.5 dpkg-deb: error: subprocess returned error exit status 2 #14 678.5 tar: Unexpected EOF in archive #14 678.5 tar: Error is not recoverable: exiting now [2026-03-21T18:34:03.054Z] #14 679.3 dpkg-deb (subprocess): cannot copy archive member from '/tmp/keybase_amd64.deb' to decompressor pipe: unexpected end of file or stream [2026-03-21T18:34:03.273Z] #14 679.5 dpkg-deb (subprocess): decompressing archive '/tmp/keybase_amd64.deb' (size=157060932) member 'data.tar': lzma error: internal error (bug) [2026-03-21T18:34:03.470Z] #14 679.6 dpkg-deb: error: subprocess returned error exit status 2 #14 679.6 tar: Unexpected EOF in archive #14 679.6 tar: Error is not recoverable: exiting now [2026-03-21T18:34:04.014Z] #14 680.3 dpkg-deb (subprocess): cannot copy archive member from '/tmp/keybase_amd64.deb' to decompressor pipe: unexpected end of file or stream [2026-03-21T18:34:04.491Z] #14 680.7 dpkg-deb (subprocess): decompressing archive '/tmp/keybase_amd64.deb' (size=157060932) member 'data.tar': lzma error: internal e [2026-03-21T18:34:04.648Z] rror (bug) #14 680.7 dpkg-deb: error: subprocess returned error exit status 2 #14 680.7 tar: Unexpected EOF in archive #14 680.7 tar: Error is not recoverable: exiting now [2026-03-21T18:34:05.061Z] #14 681.3 dpkg-deb (subprocess): cannot copy archive member from '/tmp/keybase_amd64.deb' to decompressor pipe: unexpected end of file or stream [2026-03-21T18:34:05.309Z] #14 681.4 dpkg-deb (subprocess): decompressing archive '/tmp/keybase_amd64.deb' (size=157060932) member 'data.tar': lzma error: internal error (bug) #14 681.4 dpkg-deb: error: subprocess returned error exit status 2 #14 681.4 tar: Unexpected EOF in archive #14 681.4 tar: Error is not recoverable: exiting now [2026-03-21T18:34:06.193Z] #14 682.4 dpkg-deb (subprocess): cannot copy archive member from '/tmp/keybase_amd64.deb' to decompressor pipe: unexpected end of file or stream [2026-03-21T18:34:06.431Z] #14 682.7 dpkg-deb (subprocess): decompressing archive '/tmp/keybase_amd64.deb' (size=157060932) member 'data.tar': lzma error: internal error (bug) [2026-03-21T18:34:06.614Z] #14 682.7 dpkg-deb: error: subprocess returned error exit status 2 #14 682.7 tar: Unexpected EOF in archive #14 682.7 tar: Error is not recoverable: exiting now ```

• Fixes Feature keybase.io seems to be stuck in an infinite loop during test #149

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[sebst]

install.sh changed but version in devcontainer-feature.json not increased. increase minor version here

[Copilot]

install.sh changed but version in devcontainer-feature.json not increased. increase minor version here

Done — bumped version from 1.1.0 to 1.2.0 in commit f6b3e52.