Add radarr Dockerfile

images/radarr/Dockerfile

@@ -0,0 +1,36 @@
+FROM golang:latest as builder
+
+ARG TARGETARCH
+ARG VERSION
+
+# Install chisel and build rootfs with radarr dependencies
+RUN \
+    go install github.com/canonical/chisel/cmd/chisel@latest \
+    && mkdir /rootfs && chisel cut \
+        --release ubuntu-24.04 \
+        --root /rootfs \
+        base-files_base \
+        base-files_release-info \
+        base-passwd_data \
+        ca-certificates_data \
+        dotnet-runtime-8.0_libs \
+        openssl_config \
+        libsqlite3-0_libs
+
+# Download radarr
+RUN \
+    mkdir -p /radarr /config \
+    && case "${TARGETARCH}" in \
+        'amd64') export ARCH='x64' ;; \
+        'arm64') export ARCH='arm64' ;; \
+    esac \
+    && curl -fsSL "https://github.com/Radarr/Radarr/releases/download/v${VERSION}/Radarr.master.${VERSION}.linux-core-${ARCH}.tar.gz" \
+    | tar xzf - -C /radarr --strip-components=1 \
+    && rm -rf /radarr/Radarr.Update
+
+
+FROM scratch
+COPY --from=builder /rootfs /
+COPY --from=builder /radarr /radarr
+
+ENTRYPOINT ["/radarr/Radarr", "--nobrowser", "--data=/config"]

images/radarr/version.sh

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+#!/usr/bin/env bash
+VERSION=$(curl -s "https://radarr.servarr.com/v1/update/master/changes?os=linux&runtime=netcore" | jq --raw-output '.[0].version')
+echo ${VERSION}