create_vectorized_postgres.sh

#!/bin/sh
set -eu

is_valid_name() {
    case "$1" in
        ""|*[!a-zA-Z0-9_.-]*)
            return 1
            ;;
        *)
            return 0
            ;;
    esac
}

if [ "${1-}" = "" ]; then
    printf "Postgres name: "
    read -r POSTGRES_NAME
else
    POSTGRES_NAME="$1"
fi

if ! is_valid_name "$POSTGRES_NAME"; then
    printf "Invalid postgres name. Use letters, numbers, dot, underscore, or dash.\n" >&2
    exit 1
fi

if [ "${POSTGRES_PASSWORD-}" = "" ]; then
    printf "Postgres password: "
    read -r POSTGRES_PASSWORD
fi

if [ "$POSTGRES_PASSWORD" = "" ]; then
    printf "Postgres password cannot be empty.\n" >&2
    exit 1
fi

CONTAINER_NAME="${POSTGRES_NAME}-postgres"
IMAGE="${POSTGRES_IMAGE-pgvector/pgvector:pg18}"

printf "Container: %s\n" "$CONTAINER_NAME"
printf "Image: %s\n" "$IMAGE"

if docker ps -a --format '{{.Names}}' | grep -qx "$CONTAINER_NAME"; then
    printf "Container '%s' already exists. Remove it first:\n" "$CONTAINER_NAME" >&2
    printf "docker rm -f %s\n" "$CONTAINER_NAME" >&2
    exit 1
fi

docker run \
  --name "$CONTAINER_NAME" \
  -p "5432:5432" \
  -e "POSTGRES_PASSWORD=$POSTGRES_PASSWORD" \
  -e "POSTGRES_USER=postgres" \
  -d "$IMAGE"