Rebase to 3.21

[upchui]

---

• I have read the contributing guideline and understand that I have made the correct modifications

---

Description:

This pull request updates the base image used for the Docker container. I changed the base image from linuxserver/baseimage-alpine:3.20 to linuxserver/baseimage-alpine:3.21. Additionally, all issues that arose due to this rebase have been fixed.

Benefits of this PR and context:

Rebase to 3.21

How Has This Been Tested?

I have tested it on x64 as well as on aarch64 and it is functional.

Source / References:

[LinuxServer-CI]

I am a bot, here are the test results for this PR:
https://ci-tests.linuxserver.io/lspipepr/tvheadend/653bd040-pkg-974d8557-dev-82afb00561376a5eedaa422644a8f6bcf12dd7e1-pr-263/index.html
https://ci-tests.linuxserver.io/lspipepr/tvheadend/653bd040-pkg-974d8557-dev-82afb00561376a5eedaa422644a8f6bcf12dd7e1-pr-263/shellcheck-result.xml

Tag	Passed
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arm64v8-653bd040-pkg-974d8557-dev-82afb00561376a5eedaa422644a8f6bcf12dd7e1-pr-263	✅

[Mizokuiam]

This is an interesting point. Have you considered...

[upchui]

@Mizokuiam I have no idea what you mean.
Nevertheless, I'm wondering how long the PR will remain open because it's time for something to finally happen.

[j0nnymoe]

It's time to happen when someone within the team has done the rebase + the container has been tested.

[Roxedus]

Follow the contribution guide, update the readme-vars. Direct changes to the readme itself will be overwritten.

[Roxedus]

We aim to also implement non-root support with this alpine release cycle, thus each rebase also taking time, as it need to be tested.

[LinuxServer-CI]

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https://ci-tests.linuxserver.io/lspipepr/tvheadend/653bd040-pkg-7ec45f95-dev-964a9cfeb78edcc1d3ff49f233e4eda8a74358ca-pr-263/index.html
https://ci-tests.linuxserver.io/lspipepr/tvheadend/653bd040-pkg-7ec45f95-dev-964a9cfeb78edcc1d3ff49f233e4eda8a74358ca-pr-263/shellcheck-result.xml

Tag	Passed
amd64-653bd040-pkg-7ec45f95-dev-964a9cfeb78edcc1d3ff49f233e4eda8a74358ca-pr-263	✅
arm64v8-653bd040-pkg-7ec45f95-dev-964a9cfeb78edcc1d3ff49f233e4eda8a74358ca-pr-263	✅

[LinuxServer-CI]

I am a bot, here are the test results for this PR:
https://ci-tests.linuxserver.io/lspipepr/tvheadend/653bd040-pkg-64415b91-dev-9b71e22b3d7ef785d18fd1f50c1711f70f388e0e-pr-263/index.html
https://ci-tests.linuxserver.io/lspipepr/tvheadend/653bd040-pkg-64415b91-dev-9b71e22b3d7ef785d18fd1f50c1711f70f388e0e-pr-263/shellcheck-result.xml

Tag	Passed
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arm64v8-653bd040-pkg-64415b91-dev-9b71e22b3d7ef785d18fd1f50c1711f70f388e0e-pr-263	✅

[LinuxServer-CI]

I am a bot, here are the test results for this PR:
https://ci-tests.linuxserver.io/lspipepr/tvheadend/653bd040-pkg-a8ef40e6-dev-a2395235009131374770e31083207d515c47c9f0-pr-263/index.html
https://ci-tests.linuxserver.io/lspipepr/tvheadend/653bd040-pkg-a8ef40e6-dev-a2395235009131374770e31083207d515c47c9f0-pr-263/shellcheck-result.xml

Tag	Passed
amd64-653bd040-pkg-a8ef40e6-dev-a2395235009131374770e31083207d515c47c9f0-pr-263	✅
arm64v8-653bd040-pkg-a8ef40e6-dev-a2395235009131374770e31083207d515c47c9f0-pr-263	✅

[mriedel87]

@upchui
I think the only thing missing for merging is to add
- { date: "07.01.25:", desc: "Rebase to Alpine 3.21." }
under section "changelogs" in the "readme-vars.yml" file.

[LinuxServer-CI]

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https://ci-tests.linuxserver.io/lspipepr/tvheadend/653bd040-pkg-8656e852-dev-505831d8b711eecf676bea77f89fa63b92bf48d5-pr-263/index.html
https://ci-tests.linuxserver.io/lspipepr/tvheadend/653bd040-pkg-8656e852-dev-505831d8b711eecf676bea77f89fa63b92bf48d5-pr-263/shellcheck-result.xml

Tag	Passed
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arm64v8-653bd040-pkg-8656e852-dev-505831d8b711eecf676bea77f89fa63b92bf48d5-pr-263	✅

[LinuxServer-CI]

I am a bot, here are the test results for this PR:
https://ci-tests.linuxserver.io/lspipepr/tvheadend/653bd040-pkg-906c578d-dev-e673b7cc246f842e9eb50c580294166560664d45-pr-263/index.html
https://ci-tests.linuxserver.io/lspipepr/tvheadend/653bd040-pkg-906c578d-dev-e673b7cc246f842e9eb50c580294166560664d45-pr-263/shellcheck-result.xml

Tag	Passed
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arm64v8-653bd040-pkg-906c578d-dev-e673b7cc246f842e9eb50c580294166560664d45-pr-263	✅

[LinuxServer-CI]

I am a bot, here are the test results for this PR:
https://ci-tests.linuxserver.io/lspipepr/tvheadend/c0c55c78-pkg-72952e78-dev-16bd054e6b5749d95f4a73c6981f42c1a0c0fe76-pr-263/index.html
https://ci-tests.linuxserver.io/lspipepr/tvheadend/c0c55c78-pkg-72952e78-dev-16bd054e6b5749d95f4a73c6981f42c1a0c0fe76-pr-263/shellcheck-result.xml

Tag	Passed
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arm64v8-c0c55c78-pkg-72952e78-dev-16bd054e6b5749d95f4a73c6981f42c1a0c0fe76-pr-263	✅

[codefaux]

Has this been tested thoroughly enough yet? Do you need a tester? I am about to deploy some stuff and I need streamlink, added in Alpine 3.21 -- I'm going to fork and use this PR in the mean time, will provide feedback.

[LinuxServer-CI]

I am a bot, here are the test results for this PR:
https://ci-tests.linuxserver.io/lspipepr/tvheadend/61d728e1-pkg-ac750b3d-dev-68c2cfed5151758a34a1a0cf609106ffb3f62808-pr-263/index.html
https://ci-tests.linuxserver.io/lspipepr/tvheadend/61d728e1-pkg-ac750b3d-dev-68c2cfed5151758a34a1a0cf609106ffb3f62808-pr-263/shellcheck-result.xml

Tag	Passed
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arm64v8-61d728e1-pkg-ac750b3d-dev-68c2cfed5151758a34a1a0cf609106ffb3f62808-pr-263	✅

[LinuxServer-CI]

I am a bot, here are the test results for this PR:
https://ci-tests.linuxserver.io/lspipepr/tvheadend/0af87f13-pkg-a8cd26e9-dev-9ff59b9558d01549b0dfb82d86102f77bb7fb9ce-pr-263/index.html
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Tag	Passed
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arm64v8-0af87f13-pkg-a8cd26e9-dev-9ff59b9558d01549b0dfb82d86102f77bb7fb9ce-pr-263	✅

[LinuxServer-CI]

I am a bot, here are the test results for this PR:
https://ci-tests.linuxserver.io/lspipepr/tvheadend/24efc44e-pkg-8f77938f-dev-435e55023886f81f354a8f98c7b96ff297a815f0-pr-263/index.html
https://ci-tests.linuxserver.io/lspipepr/tvheadend/24efc44e-pkg-8f77938f-dev-435e55023886f81f354a8f98c7b96ff297a815f0-pr-263/shellcheck-result.xml

Tag	Passed
amd64-24efc44e-pkg-8f77938f-dev-435e55023886f81f354a8f98c7b96ff297a815f0-pr-263	✅
arm64v8-24efc44e-pkg-8f77938f-dev-435e55023886f81f354a8f98c7b96ff297a815f0-pr-263	✅

[LinuxServer-CI]

This pull request has been automatically marked as stale because it has not had recent activity. This might be due to missing feedback from OP. It will be closed if no further activity occurs. Thank you for your contributions.

[LinuxServer-CI]

I am a bot, here are the test results for this PR:
https://ci-tests.linuxserver.io/lspipepr/tvheadend/e0190932-pkg-327ea496-dev-9c5363cefbec9d8eff8397ae305a467a0eff0e2a-pr-263/index.html
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Tag	Passed
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arm64v8-e0190932-pkg-327ea496-dev-9c5363cefbec9d8eff8397ae305a467a0eff0e2a-pr-263	✅

[LinuxServer-CI]

I am a bot, here are the test results for this PR:
https://ci-tests.linuxserver.io/lspipepr/tvheadend/7f9710c1-pkg-adcf6b30-dev-91e12431399e2f11439453464f65193e08112861-pr-263/index.html
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Tag	Passed
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arm64v8-7f9710c1-pkg-adcf6b30-dev-91e12431399e2f11439453464f65193e08112861-pr-263	✅

[LinuxServer-CI]

I am a bot, here are the test results for this PR:
https://ci-tests.linuxserver.io/lspipepr/tvheadend/67f98d62-pkg-9e3251b0-dev-ace7a2d2b17dd7c9119a3a3703b9d582c861e93b-pr-263/index.html
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Tag	Passed
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arm64v8-67f98d62-pkg-9e3251b0-dev-ace7a2d2b17dd7c9119a3a3703b9d582c861e93b-pr-263	✅

[LinuxServer-CI]

I am a bot, here are the test results for this PR:
https://ci-tests.linuxserver.io/lspipepr/tvheadend/3d92f9f0-pkg-a9f01cc1-dev-63b4631d1f43a1e44e3328d8b1a4bf23fac090e3-pr-263/index.html
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Tag	Passed
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arm64v8-3d92f9f0-pkg-a9f01cc1-dev-63b4631d1f43a1e44e3328d8b1a4bf23fac090e3-pr-263	✅

[LinuxServer-CI]

I am a bot, here are the test results for this PR:
https://ci-tests.linuxserver.io/lspipepr/tvheadend/5abbcda4-pkg-c3defe2e-dev-cc5722171e398a62b7612166c16559fd112839f3-pr-263/index.html
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Tag	Passed
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arm64v8-5abbcda4-pkg-c3defe2e-dev-cc5722171e398a62b7612166c16559fd112839f3-pr-263	✅