Installation: Add Release-Via-Docker option

installation/release-to-docker/Dockerfile

@@ -0,0 +1,24 @@
+FROM ubuntu:24.04
+
+ENV DEBIAN_FRONTEND=noninteractive \
+    LANG=C.UTF-8 \
+    LC_ALL=C.UTF-8
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    ca-certificates \
+    gosu \
+    libstdc++6 \
+    libncurses6 libncursesw6 \
+    openssl libssl3 \
+    libmagic1t64 file \
+    postgresql-client \
+    ffmpeg imagemagick libimage-exiftool-perl \
+    libvips42t64 \
+  && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /opt/pleroma
+
+COPY pleroma-host-release-entrypoint.sh /usr/local/bin/pleroma-host-release-entrypoint.sh
+RUN chmod +x /usr/local/bin/pleroma-host-release-entrypoint.sh
+ENTRYPOINT ["/usr/local/bin/pleroma-host-release-entrypoint.sh"]
+CMD ["/opt/pleroma/bin/pleroma", "start"]