diff --git a/ci/main.go b/ci/main.go
index f0de7c29..36ed70ad 100644
--- a/ci/main.go
+++ b/ci/main.go
@@ -17,22 +17,70 @@ package main
 import (
 	"context"
 	"dagger/ci/internal/dagger"
+	"fmt"
 )
 
 type Ci struct{}
 
 // Returns a Container built from the Dockerfile in the provided Directory
-func (m *Ci) Build(ctx context.Context, directory *dagger.Directory) *dagger.Container {
-	return dag.Container().Build(directory)
+func (m *Ci) Build(_ context.Context, dir *dagger.Directory) *dagger.Container {
+	return dag.Container().Build(dir)
 }
 
 // Returns the result of haml-lint run against the sources in the provided Directory
-func (m *Ci) Lint(ctx context.Context, directory *dagger.Directory) (string, error) {
-    return dag.Container().
-        From("ruby:latest").
-        WithMountedDirectory("/mnt", directory).
-        WithWorkdir("/mnt").
-        WithExec([]string{"gem", "install", "haml-lint"}).
-        WithExec([]string{"haml-lint", "--reporter", "json", "."}).
-        Stdout(ctx)
+func (m *Ci) Lint(ctx context.Context, dir *dagger.Directory) (string, error) {
+	return dag.Container().
+		From("ruby:latest").
+		WithMountedDirectory("/mnt", dir).
+		WithWorkdir("/mnt").
+		WithExec([]string{"gem", "install", "haml-lint"}).
+		WithExec([]string{"haml-lint", "--reporter", "json", "."}).
+		Stdout(ctx)
+}
+
+// Creates a PostgreSQL service for local testing based on the official image with the provided version. If no version is provided, 'latest' will be used.
+func (m *Ci) Postgres(
+	_ context.Context,
+	// +optional
+	// +default="latest"
+	version string) *dagger.Service {
+
+	return dag.Container().
+		From(fmt.Sprintf("postgres:%s", version)).
+		WithEnvVariable("POSTGRES_PASSWORD", "postgres").
+		WithExposedPort(5432).
+		AsService()
+}
+
+// Creates a memcached service for local testing based on the official image with the provided version. If no version is provided, 'latest' will be used.
+func (m *Ci) Memcached(
+	_ context.Context,
+	// +optional
+	// +default="latest"
+	version string) *dagger.Service {
+
+	return dag.Container().
+		From(fmt.Sprintf("postgres:%s", version)).
+		WithEnvVariable("POSTGRES_PASSWORD", "postgres").
+		WithExposedPort(5432).
+		AsService()
+}
+
+// Executes the test suite for the Rails application in the provided Directory
+func (m *Ci) Test(ctx context.Context, dir *dagger.Directory) *dagger.Container {
+	return m.Build(ctx, dir).From("ruby:latest").
+		WithEnvVariable("RAILS_TEST_DB_NAME", "postgres").
+		WithEnvVariable("RAILS_TEST_DB_USERNAME", "postgres").
+		WithEnvVariable("RAILS_TEST_DB_PASSWORD", "postgres").
+		WithEnvVariable("RAILS_ENV", "test").
+		WithEnvVariable("CI", "true").
+		WithEnvVariable("PGDATESTYLE", "German").
+		WithExec([]string{"sudo", "apt-get", "-yqq", "update"}).
+		WithExec([]string{"sudo", "apt-get", "-yqq", "install", "libpq-dev", "libvips-dev"}).
+		WithExec([]string{"gem", "install", "bundler", "--version", "'~> 2'"}).
+		WithExec([]string{"bundle", "install", "--jobs", "4", "--retry", "3"}).
+		WithExec([]string{"bundle", "exec", "rails", "db:create"}).
+		WithExec([]string{"bundle", "exec", "rails", "db:migrate"}).
+		WithExec([]string{"bundle", "exec", "rails", "assets:precompile"}).
+		WithExec([]string{"bundle", "exec", "rails", "test"})
 }