Town: Pleroma joins, and a rerun finds what it made

Pleroma 2.10.2 runs in the pasture from its OTP release (libvips, the
dedupe question, and hackney pointed at the system CA bundle); its driver is
Akkoma's on its own container and database. The pair passes 241 cells, after
its first run showed Pleroma dropping Follows it could not verify yet.

The PrivaPub driver finds the group an earlier run made instead of failing
on the name; the seeder posts a quote or reply of a post from its own round
after that post.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LsXgEaXee4GCU1hwYgPJXw

tools/pasture/images/pleroma/Containerfile

@@ -0,0 +1,16 @@
+# Pleroma publishes no image, so this is its OTP release on the Ubuntu it is built for (24.04 for 2.10). The "stable"
+# zip moves; the checksum pins 2.10.2 and fails the build when stable has moved on. Its image handling (vix) needs libvips.
+FROM docker.io/library/ubuntu:24.04
+ARG PLEROMA_ZIP=https://git.pleroma.social/api/packages/pleroma/generic/pleroma-otp-stable-amd64/latest/pleroma.zip
+ARG PLEROMA_SHA256=5b6ab701685c1254145e33426d8775d4e159b5a17cc54a8c45d81ae0d9adc0b5
+RUN apt-get update \
+	&& DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
+		ca-certificates curl unzip libncurses6 libmagic1 libmagic-mgc file postgresql-client libimage-exiftool-perl ffmpeg imagemagick libvips42t64 \
+	&& rm -rf /var/lib/apt/lists/*
+RUN curl -fsSL "$PLEROMA_ZIP" -o /tmp/pleroma.zip \
+	&& echo "$PLEROMA_SHA256  /tmp/pleroma.zip" | sha256sum -c - \
+	&& unzip -q /tmp/pleroma.zip -d /tmp && mv /tmp/release /opt/pleroma && rm /tmp/pleroma.zip \
+	&& mkdir -p /var/lib/pleroma/uploads /var/lib/pleroma/static /etc/pleroma
+ENV PLEROMA_CONFIG_PATH=/etc/pleroma/config.exs LANG=C.UTF-8 ELIXIR_ERL_OPTIONS=+fnu
+COPY entrypoint.sh /entrypoint.sh
+ENTRYPOINT ["/entrypoint.sh"]