Dockerfile demonstrating multi-stage build

Dockerfile

FROM mysql:5 as sqldump
WORKDIR /home

# Copy required artifacts and source code
COPY initial.sql .
COPY java-program ./java-program
COPY sqldump.sh .

# Copy jdk11 and gradle from the gradle:jdk11 image
COPY --from=gradle:jdk11 /opt/java /opt/java
COPY --from=gradle:jdk11 /opt/gradle /opt/gradle

# Set environment variable
ARG MYSQL_ROOT_PASSWORD=root

# Execute the build script which will generate the sql dump
RUN chmod u+x sqldump.sh && /bin/bash -c ./sqldump.sh

FROM mysql:5
COPY --from=sqldump /home/dump.sql.gz /docker-entrypoint-initdb.d