Update README about new Postgres images

README.md

@@ -96,35 +96,13 @@ bun install
 
 3. Set up a PostgreSQL database, using the `pg_uuidv7` extension
 
-You may use the following [Dockerfile](Postgres.Dockerfile) to set it up:
+Lysand offers a pre-made Docker image for PostgreSQL with the extension already installed. Use `ghcr.io/lysand-org/postgres:main` as your Docker image name to use it.
 
-```Dockerfile
+You may otherwise use this [Dockerfile](Postgres.Dockerfile) to set it up.
-# Use the latest Postgres Docker image based on Alpine
-FROM postgres:alpine
 
-# Set working directory
+1. Copy the `config.toml.example` file to `config.toml` and fill in the values (you can leave most things to the default, but you will need to configure things such as the database connection)
-WORKDIR /usr/src/app
 
-# Install curl
+2. Run migrations:
-RUN apk add --no-cache curl
-
-RUN cd "$(mktemp -d)" \
-        && curl -LO "https://github.com/fboulnois/pg_uuidv7/releases/download/v1.3.0/{pg_uuidv7.tar.gz,SHA256SUMS}" \
-        && tar xf pg_uuidv7.tar.gz \
-        && sha256sum -c SHA256SUMS \
-        && PG_MAJOR=$(pg_config --version | sed 's/^.* \([0-9]\{1,\}\).*$/\1/') \
-        && cp "$PG_MAJOR/pg_uuidv7.so" "$(pg_config --pkglibdir)" \
-        && cp sql/pg_uuidv7--1.3.sql pg_uuidv7.control "$(pg_config --sharedir)/extension"
-# Add a script to run the CREATE EXTENSION command
-RUN echo '#!/bin/sh\npsql -U "$POSTGRES_USER" -d "$POSTGRES_DB" -c "CREATE EXTENSION pg_uuidv7;"' > /docker-entrypoint-initdb.d/init.sh
-
-# Make the entrypoint script executable
-RUN chmod +x /docker-entrypoint-initdb.d/init.sh
-```
-
-4. Copy the `config.toml.example` file to `config.toml` and fill in the values (you can leave most things to the default, but you will need to configure things such as the database connection)
-
-5. Run migrations:
 
 ```bash
 bun migrate