Releases on January 10th, 2021 and before

dockerhub
linuxserver/jackett on Docker Hub version-v0.17.231 v0.17.231-ls14 arm64v8-version-v0.17.231 development-version-v0.17.231 arm32v7-version-v0.17.231 development-v0.17.231-ls13 amd64-version-v0.17.231 arm64v8-development-version-v0.17.231 arm64v8-v0.17.231-ls14 arm32v7-development-version-v0.17.231 amd64-development-version-v0.17.231 arm64v8-development-v0.17.231-ls13
dockerhub
hotio/radarr on Docker Hub nightly-3.0.2.4379
dockerhub
linuxserver/jackett on Docker Hub arm32v7-development-v0.17.231-ls13
dockerhub
hotio/radarr on Docker Hub nightly-9fb0212 musl-3.0.2.4379 musl-aa5e31f
dockerhub
linuxserver/jackett on Docker Hub amd64-development-v0.17.231-ls13 arm32v7-v0.17.231-ls14
dockerhub
hotio/jackett on Docker Hub testing-0.17.231 testing-7a44b18 release-0.17.231 release-1c1c240
dockerhub
linuxserver/jackett on Docker Hub amd64-v0.17.231-ls14
dockerhub
hotio/radarr on Docker Hub nightly-9fb0212-982-linux-amd64
dockerhub
linuxserver/bookstack on Docker Hub arm64v8-v0.31.3-ls119
dockerhub
hotio/radarr on Docker Hub musl-aa5e31f-983-linux-amd64
Maybe you can find something interesting in this list