WIP - Actually kinda works!

main.go

@@ -0,0 +1,69 @@
+package main
+
+import (
+	"fmt"
+	"github.com/docker/docker/api/types"
+	"github.com/docker/docker/client"
+	"github.com/robfig/cron"
+	"golang.org/x/net/context"
+	"io"
+	"log"
+	"os"
+	"strings"
+	"time"
+)
+
+type ContainerStartJob struct {
+	Client      *client.Client
+	ContainerID string
+	Context     context.Context
+	Name        string
+	Schedule    string
+}
+
+func (job ContainerStartJob) Run() {
+	fmt.Println("Starting: ", job.Name)
+	err := job.Client.ContainerStart(job.Context, job.ContainerID, types.ContainerStartOptions{})
+	if err != nil {
+		panic(err)
+	}
+}
+
+func main() {
+	cli, err := client.NewEnvClient()
+	if err != nil {
+		panic(err)
+	}
+
+	containers, err := cli.ContainerList(context.Background(), types.ContainerListOptions{All: true})
+	if err != nil {
+		panic(err)
+	}
+
+	c := cron.New()
+
+	jobs := []ContainerStartJob{}
+
+	for _, container := range containers {
+		if val, ok := container.Labels["cron.schedule"]; ok {
+			jobName := strings.Join(container.Names, "/")
+			fmt.Println("Scheduling ", jobName, "(", val, ")")
+			c.AddJob(val, ContainerStartJob{
+				Schedule:    val,
+				Client:      cli,
+				ContainerID: container.ID,
+				Context:     context.Background(),
+				Name:        jobName,
+			})
+		}
+	}
+
+	// Start the cron job threads
+	c.Start()
+
+	// Start the loop
+	for {
+		time.Sleep(5 * time.Second)
+		fmt.Println("Tick...")
+	}
+}