chore: add dockerfile for build of a demo image

docker-demo/Dockerfile-pg-embeded

@@ -0,0 +1,17 @@
+FROM postgres:17.2
+
+RUN set -eux; \
+    apt-get update; \
+    apt-get install -y default-jre netcat-traditional;
+
+RUN mkdir /app
+#RUN groupadd -g 10001 javauser && useradd -u 10000 -g javauser javauser
+ENV IZANAMI_CONTAINERIZED=true
+COPY ../target/izanami.jar /app/izanami.jar
+COPY script.sh /app/script.sh
+RUN chmod +x /app/script.sh
+
+#WORKDIR /app
+RUN chown -R postgres:postgres /app
+#USER postgres
+CMD ["/bin/sh", "/app/script.sh"]

docker-demo/script.sh

@@ -0,0 +1,9 @@
+/usr/local/bin/docker-entrypoint.sh postgres&
+
+echo "Waiting postgres to launch on 5432..."
+
+while ! nc -z localhost 5432; do
+  sleep 0.1 # wait for 1/10 of the second before check again
+done
+
+java -jar /app/izanami.jar