switch to postgresql (#1763)

switch sqlx to postgresql

backend/update-sqlx-data.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+TMP_DIR=$(mktemp -d)
+mkdir $TMP_DIR/pgdata
+docker run -d --rm --name=tmp_postgres -e POSTGRES_PASSWORD=password -v $TMP_DIR/pgdata:/var/lib/postgresql/data postgres
+
+(
+    set -e
+    ctr=0
+    while ! docker exec tmp_postgres psql -U postgres || [ $ctr -lt 5 ]; do
+    	ctr=$[ctr + 1]
+    	sleep 1;
+    done
+    
+    PG_IP=$(docker inspect -f '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' tmp_postgres)
+    
+    DATABASE_URL=postgres://postgres:password@$PG_IP/postgres cargo sqlx migrate run
+    DATABASE_URL=postgres://postgres:password@$PG_IP/postgres cargo sqlx prepare -- --lib --profile=test
+)
+
+docker stop tmp_postgres
+sudo rm -rf $TMP_DIR