use 'psql' hostname for ci

Author: tanner0101

Tests/FluentPostgreSQLTests/FluentPostgreSQLTests.swift

@@ -11,7 +11,11 @@ class FluentPostgreSQLTests: XCTestCase {
     var database: PostgreSQLDatabase!
 
     override func setUp() {
+        #if os(macOS)
         let hostname = "localhost"
+        #else
+        let hostname = "psql"
+        #endif
 
         let config: PostgreSQLDatabaseConfig = .init(
             hostname: hostname,

circle.yml

@@ -12,6 +12,7 @@ jobs:
     docker:
       - image: codevapor/swift:4.1
       - image: circleci/postgres:latest
+        name: psql
         environment:
           POSTGRES_USER: vapor_username
           POSTGRES_DB: vapor_database
@@ -28,6 +29,7 @@ jobs:
     docker:
       - image: codevapor/swift:4.1
       - image: circleci/postgres:9
+        name: psql
         environment:
           POSTGRES_USER: vapor_username
           POSTGRES_DB: vapor_database