Postgres with liquibase in one docker image - postgresql

Question

I want to create dataBase for autotest in kubernetes. I want to create an image(postg-my-app-v1) from postgres image, add changelog files, and liquibase image. When I deploy this image with helm i just want to specify containers - postg-my-app-v1 and it should startup pod with database and create tables with liquibase changelog.
Now i create Dockerfile as below
FROM postgres
ADD /changelog /liquibase/changelog
I don't understand how to add liquibase to this image? Or i must use docker compose? or helm lifecycle postStart for liquibase?

Answer 1

FROM docker-proxy.tcsbank.ru/liquibase/liquibase:3.10.x AS Liquibase
FROM docker-proxy.tcsbank.ru/postgres:9.6.12 AS Postgres
ENV POSTGRES_DB bpm
ENV POSTGRES_USER priest
ENV POSTGRES_PASSWORD Bpm_123
COPY --from=Liquibase /liquibase /liquibase
ENV JAVA_HOME /usr/local/openjdk-11
COPY --from=Liquibase $JAVA_HOME $JAVA_HOME
ENV LIQUIBASE_CHANGELOG /liquibase/changelog/
COPY /changelog $LIQUIBASE_CHANGELOG
COPY liquibase.sh /usr/local/bin/
COPY main.sh /usr/local/bin/
RUN chmod +x /usr/local/bin/liquibase.sh && \
chmod +x /usr/local/bin/main.sh && \
ln -s /usr/local/bin/main.sh / && \
ln -s /usr/local/bin/liquibase.sh /
ENTRYPOINT ["main.sh"]
main.sh
#!/bin/bash
bash liquibase.sh | awk '{print "liquiBase script: " $0}' &
bash docker-entrypoint.sh postgres
liquibase.sh
#!/bin/bash
for COUNTER in {1..120}
do
sleep 1s
echo "check db $COUNTER times"
pg_isready
if [ $? -eq 0 ]
then
break
fi
done
echo "try execute liquibase"
bash liquibase/liquibase --url="jdbc:postgresql://localhost:5432/$POSTGRES_DB" --username=$POSTGRES_USER --password=$POSTGRES_PASSWORD --changeLogFile=/liquibase/changelog/changelog.xml update