build image too

pkgs/docker/Dockerfile

@@ -0,0 +1,24 @@
+FROM ubuntu:jammy
+
+COPY rippled_*_amd64.deb /tmp/
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends /tmp/rippled_*_amd64.deb && \
+    rm -f /tmp/*.deb && \
+    rm -rf /var/lib/apt/lists/*
+
+RUN <<EOF
+useradd \
+    --system \
+    --no-create-home \
+    --shell /usr/sbin/nologin \
+    rippled
+chown -R \
+    rippled:rippled \
+    /var/lib/rippled \
+    /var/log/rippled \
+    /opt/ripple
+EOF
+EXPOSE 51235 6006
+USER rippled
+
+ENTRYPOINT ["/opt/ripple/bin/rippled"]