default timezone for postgres to TZ=UTC

Author: pvormste

README.md

@@ -14,6 +14,7 @@ go get -u github.com/pvormste/dockertestwrapper/v2
 ### Postgres
 
 The postgres helper function can be used to start a postgres container with default credentials/connection details.
+Timezone defaults to `TZ=UTC`.
 
 Although it should be possible to start any postgres version with the `InitPostgresContainer` function, following
 images are covered by tests in this repository:

postgres.go

@@ -23,11 +23,12 @@ func InitPostgresContainer(tag string) (*WrapperInstance, error) {
 	userEnv := fmt.Sprintf("POSTGRES_USER=%s", DefaultPostgresUser)
 	passwordEnv := fmt.Sprintf("POSTGRES_PASSWORD=%s", DefaultPostgresPassword)
 	databaseEnv := fmt.Sprintf("POSTGRES_DB=%s", DefaultPostgresDatabase)
+	timezoneEnv := fmt.Sprintf("TZ=UTC")
 
 	params := WrapperParams{
 		ImageName:           PostgresImageName,
 		ImageTag:            tag,
-		EnvVariables:        []string{userEnv, passwordEnv, databaseEnv},
+		EnvVariables:        []string{userEnv, passwordEnv, databaseEnv, timezoneEnv},
 		ContainerPort:       DefaultPostgresPort,
 		AfterInitActionFunc: postgresAfterInitAction,
 	}