Implement Swarm provider

pkg/docker/container.go

@@ -1,16 +1,15 @@
 package docker
 
 import (
-	"context"
 	"sort"
 
 	"github.com/docker/docker/api/types"
 	"github.com/docker/docker/api/types/filters"
 )
 
-// Containers return containers based on filters
-func (c *Client) Containers(filterArgs filters.Args) ([]types.Container, error) {
-	containers, err := c.Api.ContainerList(context.Background(), types.ContainerListOptions{
+// ContainerList returns Docker containers
+func (c *Client) ContainerList(filterArgs filters.Args) ([]types.Container, error) {
+	containers, err := c.Api.ContainerList(c.ctx, types.ContainerListOptions{
 		Filters: filterArgs,
 	})
 	if err != nil {

pkg/docker/service.go

@@ -0,0 +1,25 @@
+package docker
+
+import (
+	"sort"
+
+	"github.com/docker/docker/api/types"
+	"github.com/docker/docker/api/types/filters"
+	"github.com/docker/docker/api/types/swarm"
+)
+
+// ServiceList returns Swarm services
+func (c *Client) ServiceList(filterArgs filters.Args) ([]swarm.Service, error) {
+	services, err := c.Api.ServiceList(c.ctx, types.ServiceListOptions{
+		Filters: filterArgs,
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	sort.Slice(services, func(i, j int) bool {
+		return services[i].Spec.Name < services[j].Spec.Name
+	})
+
+	return services, nil
+}