add blog post about October 2023 meetup in SF

contents/blog/first-meetup/index.mdx

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+---
+title: Join Us in October for Our First Meetup
+date: 2023-08-14
+author: Michael Robinson
+image: ./image.svg
+banner: ./banner.svg
+description: The first Marquez meetup will be held on 10/5/23 in San Francisco at Astronomer's HQ. 
+---
+
+Join us on Thursday, October 5th, from 5:30-8:30 pm to learn about the present 
+and future of the Marquez project. You will: 
+- meet other members of the community, 
+- learn about the project’s goals and fundamental design, 
+- hear about the project's journey from WeWork to OpenLineage adoption to Astronomer,
+- brainstorm about data lineage, 
+- participate in a discussion about the future of the project, &
+- submit your first PR to the project. 
+If that's not enough, there will also be stickers! Bring your appetite and your 
+ideas and vision for Marquez!
+
+Food will be provided, and the meetup is open to all. Don't miss this opportunity 
+to influence the direction of the project! We hope to see you there. Please 
+[sign up](https://www.meetup.com/meetup-group-bnfqymxe/events/295444209/?utm_medium=referral&utm_campaign=share-btn_savedevents_share_modal&utm_source=link) to let us know you're coming.
+
+### Time, Place & Format
+
+Date: October 5, 2023  
+Format: In-person  
+Time: 5:30-8:30 pm ET  
+Address: Astronomer, [8 California Street, 7th Floor, San Francisco, CA 94111](https://goo.gl/maps/7UxfePDNPkneyc8v5?coh=178571&entry=tt)
+
+#### Getting There
+The Astronomer SF office is in the Financial District at the corner of California
+and Drumm Streets, catty-cornered from the Market/Drumm Street cable car stop.
+
+#### Getting In 
+An Astronomer team member in the lobby will direct you to the Astronomer offices 
+on the seventh floor.
+
+### Hope to see you there!