fix: remove socket volume, use TCP via --link

tests/test.sh

@@ -5,8 +5,6 @@ IMAGE="$1"
 CONTAINER_NAME="test-$(echo "$IMAGE" | tr ':/' '-')-$$"
 DB_CONTAINER="ttrss-db-$$"
 TMPDIR="$(mktemp -d)"
-SOCKET_DIR="$TMPDIR/pg-socket"
-mkdir -p "$SOCKET_DIR"
 trap 'docker rm -f "$CONTAINER_NAME" 2>/dev/null; docker rm -f "$DB_CONTAINER" 2>/dev/null; rm -rf "$TMPDIR"' EXIT
 
 DOCKER_GW=$(docker network inspect bridge --format '{{range .IPAM.Config}}{{.Gateway}}{{end}}')
@@ -39,7 +37,6 @@ assert_contains() {
 echo "Starting PostgreSQL..."
 docker pull postgres:16-alpine > /dev/null 2>&1
 docker run -d --name "$DB_CONTAINER" \
-  -v "$SOCKET_DIR:/var/run/postgresql" \
   -e POSTGRES_DB=ttrss -e POSTGRES_USER=ttrss -e POSTGRES_PASSWORD=ttrss \
   postgres:16-alpine
 
@@ -54,7 +51,6 @@ done
 
 echo "Starting TTRSS..."
 docker run -d --name "$CONTAINER_NAME" \
-  -v "$SOCKET_DIR:/run/postgresql" \
   --link "$DB_CONTAINER:db" -p 8080:8080 "$IMAGE"
 
 echo "Waiting for TTRSS to be ready..."