Add radicale

radicale.Dockerfile

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+# syntax=docker/dockerfile:1
+# gentoo-radicale
+FROM registry.ceamac.ro/gentoo-base-busybox AS builder
+
+WORKDIR /workdir
+COPY --exclude=repos --exclude=bin . .
+RUN --mount=type=cache,target=/workdir/cache,sharing=locked <<-EOF
+	/bin/bash src/setup-radicale.sh /mnt/gentoo -j8
+EOF
+
+FROM scratch
+WORKDIR /
+EXPOSE 5232
+VOLUME ["/etc/radicale", "/var/lib/radicale"]
+COPY --from=builder /mnt/gentoo /
+RUN tar c -j -f /var/db/pkg.tar.bz2 -C /var/db/pkg . && rm -fR /var/db/pkg
+USER radicale:radicale
+CMD ["/usr/bin/radicale"]

radicale.yaml

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+services:
+  radicale:
+    image: registry.ceamac.ro/gentoo-radicale
+    restart: always
+    #userns: nomap
+    ports:
+      - "127.0.0.1:5232:5232/tcp"
+    volumes:
+      - type: volume
+        source: radicale-etc
+        target: /etc/radicale
+      - type: volume
+        source: radicale-var-lib
+        target: /var/lib/radicale
+    build:
+      context: .
+      dockerfile: radicale.Dockerfile
+      tags:
+        - "registry.ceamac.ro/gentoo-radicale"
+
+    #command: /bin/bash
+    #stdin_open: true
+    #tty: true
+    command: /usr/bin/radicale -D
+
+volumes:
+  radicale-etc:
+  radicale-var-lib:

src/setup-radicale.sh

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+#! /bin/bash
+
+set -euo pipefail
+
+imagedir="${1}"
+imagename="$(basename "${imagedir}")"
+shift
+
+usename="${imagedir}"/etc/portage/package.use
+[[ -d ${usename} ]] && usename="${usename}"/global.conf
+
+cat <<-EOF >> "${usename}"
+*/*	verify-sig verify-provenance
+EOF
+
+emerge -vk "$@" acct-user/radicale acct-group/radicale
+bin/"${imagename}"-emerge -vk "$@" www-apps/radicale dev-python/packaging app-crypt/argon2 dev-python/requests
+
+chown -R radicale:radicale "${imagedir}"/var/lib/radicale
+chmod 0750 "${imagedir}"/var/lib/radicale
+chmod -R o= "${imagedir}"/var/lib/radicale