feat: Bump default postgres version (#2481)

* Bump default postgres version

* Bump to use latest pg

* Bump version from non-ancient version

---------

Co-authored-by: bstrausser <bstrausser@locusrobotics.com>

docs/modules/postgres.md

@@ -41,7 +41,7 @@ When starting the Postgres container, you can pass options in a variadic way to
 #### Image
 
 If you need to set a different Postgres Docker image, you can use `testcontainers.WithImage` with a valid Docker image
-for Postgres. E.g. `testcontainers.WithImage("docker.io/postgres:9.6")`.
+for Postgres. E.g. `testcontainers.WithImage("docker.io/postgres:16-alpine")`.
 
 {% include "../features/common_functional_options.md" %}
 

modules/postgres/examples_test.go

@@ -21,7 +21,7 @@ func ExampleRunContainer() {
  dbPassword := "password"
 
  postgresContainer, err := postgres.RunContainer(ctx,
- testcontainers.WithImage("docker.io/postgres:15.2-alpine"),
+ testcontainers.WithImage("docker.io/postgres:16-alpine"),
  postgres.WithInitScripts(filepath.Join("testdata", "init-user-db.sh")),
  postgres.WithConfigFile(filepath.Join("testdata", "my-postgres.conf")),
  postgres.WithDatabase(dbName),

modules/postgres/postgres.go

@@ -13,7 +13,7 @@ import (
 const (
  defaultUser = "postgres"
  defaultPassword = "postgres"
- defaultPostgresImage = "docker.io/postgres:11-alpine"
+ defaultPostgresImage = "docker.io/postgres:16-alpine"
  defaultSnapshotName = "migrated_template"
 )
 
@@ -26,10 +26,9 @@ type PostgresContainer struct {
  snapshotName string
 }
 
-
 // MustConnectionString panics if the address cannot be determined.
 func (c *PostgresContainer) MustConnectionString(ctx context.Context, args ...string) string {
- addr, err := c.ConnectionString(ctx,args...)
+ addr, err := c.ConnectionString(ctx, args...)
  if err != nil {
  panic(err)
  }