chore: Remove upstream dockerfile directive

The arg substitution syntax we use has now made it into the default dockerfile syntax Signed-off-by: bo0tzz <[email protected]>
tensorchord · Jun 7, 2024 · ba78ee2 · ba78ee2
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diff --git a/Dockerfile b/Dockerfile
@@ -1,4 +1,3 @@
-# syntax=docker/dockerfile-upstream:master
 ARG CNPG_TAG
 
 FROM ghcr.io/cloudnative-pg/postgresql:$CNPG_TAG

diff --git a/README.md b/README.md
@@ -26,4 +26,9 @@ Container images for [cloudnative-pg](https://cloudnative-pg.io/) with the [pgve
 >     initdb:
 >       postInitSQL:
 >         - ALTER SYSTEM SET search_path TO "$user", public, vectors;
->         - CREATE EXTENSION IF NOT EXISTS "vectors";
+>         - CREATE EXTENSION IF NOT EXISTS "vectors";
+
+## Building
+
+To build the Dockerfile locally, you need to pass the `CNPG_TAG` and `PGVECTORS_TAG` args. For example:  
+`docker build . --build-arg="CNPG_TAG=16.3" --build-arg="PGVECTORS_TAG=v0.2.1"`