Create a mongodb replics for use with prisma ORM

mongodb.rs

ARG MONGO_VERSION

FROM mongo:${MONGO_VERSION}

# we take over the default & start mongo in replica set mode in a background task
ENTRYPOINT mongod --port $MONGO_REPLICA_PORT --replSet rs0 --bind_ip 0.0.0.0 & MONGOD_PID=$!; \
# we prepare the replica set with a single node and prepare the root user config
INIT_REPL_CMD="rs.initiate({ _id: 'rs0', members: [{ _id: 0, host: '$MONGO_REPLICA_HOST:$MONGO_REPLICA_PORT' }] })"; \
# we wait for the replica set to be ready and then submit the command just above
until ($MONGO_COMMAND admin --port $MONGO_REPLICA_PORT --eval "$INIT_REPL_CMD"); do sleep 1; done; \
# we are done but we keep the container by waiting on signals from the mongo task
echo "REPLICA SET ONLINE"; wait $MONGOD_PID;