Add methods to get containers

client.go

@@ -0,0 +1,15 @@
+package main
+
+import (
+	"context"
+	"github.com/docker/docker/api/types"
+	"github.com/docker/docker/client"
+)
+
+func getClient() (*client.Client, error) {
+	return client.NewClientWithOpts(client.FromEnv, client.WithAPIVersionNegotiation())
+}
+
+func getContainers(c *client.Client) ([]types.Container, error) {
+	return c.ContainerList(context.Background(), types.ContainerListOptions{All: true})
+}