added some docker compose examples; fixed defaults to wrong host; updated watcher behavior to retry connection every 3 secs until success or until cancelled

.gitignore

@@ -1,7 +1,7 @@
 compose.yml
 
-config/
+config*/
-certs/
+certs*/
 bin/
 
 templates/codemirror/
@@ -13,6 +13,6 @@ log/
 
 go.work.sum
 
-!src/config/
+!src/**/
 
 todo.md

README.md

@@ -54,7 +54,9 @@ A lightweight, easy-to-use, and [performant](docs/benchmark_result.md) reverse p
 
 2. Setup `go-proxy` [See here](docs/docker.md)
 
-3. Configure `go-proxy`
+3. Setup `docker-socket-proxy` (see [example](docs/docker_socket_proxy.md) other machine that is running docker (if any)
+
+4. Configure `go-proxy`
    - with text editor (e.g. Visual Studio Code)
    - or with web config editor via `http://gp.y.z`
 

docs/docker.md

@@ -95,7 +95,7 @@
 | `proxy.stop_timeout`     | time to wait for stop command                                         | `10s`                | `number[unit]...`                                                         |
 | `proxy.stop_signal`      | signal sent to container for `stop` and `kill` methods                | docker's default     | `SIGINT`, `SIGTERM`, `SIGHUP`, `SIGQUIT` and those without **SIG** prefix |
 | `proxy.<alias>.<field>`  | set field for specific alias                                          | N/A                  | N/A                                                                       |
-| `proxy.$<index>.<field>` | set field for specific alias at index (starting from **1**)            | N/A                  | N/A                                                                       |
+| `proxy.$<index>.<field>` | set field for specific alias at index (starting from **1**)           | N/A                  | N/A                                                                       |
 | `proxy.*.<field>`        | set field for all aliases                                             | N/A                  | N/A                                                                       |
 
 ### Fields
@@ -215,6 +215,8 @@ service_a:
 
 ## Docker compose examples
 
+More examples in [here](examples/)
+
 ```yaml
 volumes:
   adg-work:

docs/docker_socket_proxy.md

@@ -0,0 +1,59 @@
+## Docker Socket Proxy
+
+For docker client on other machine, set this up, then add `name: tcp://<machine_ip>:2375` to `config.yml` under `docker` section
+
+```yml
+# compose.yml on remote machine (e.g. server1)
+services:
+  docker-proxy:
+    container_name: docker-proxy
+    image: ghcr.io/linuxserver/socket-proxy
+    environment:
+      - ALLOW_START=1 #optional
+      - ALLOW_STOP=1 #optional
+      - ALLOW_RESTARTS=0 #optional
+      - AUTH=0 #optional
+      - BUILD=0 #optional
+      - COMMIT=0 #optional
+      - CONFIGS=0 #optional
+      - CONTAINERS=1 #optional
+      - DISABLE_IPV6=1 #optional
+      - DISTRIBUTION=0 #optional
+      - EVENTS=1 #optional
+      - EXEC=0 #optional
+      - IMAGES=0 #optional
+      - INFO=0 #optional
+      - NETWORKS=0 #optional
+      - NODES=0 #optional
+      - PING=1 #optional
+      - POST=1 #optional
+      - PLUGINS=0 #optional
+      - SECRETS=0 #optional
+      - SERVICES=0 #optional
+      - SESSION=0 #optional
+      - SWARM=0 #optional
+      - SYSTEM=0 #optional
+      - TASKS=0 #optional
+      - VERSION=1 #optional
+      - VOLUMES=0 #optional
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock
+    restart: always
+    tmpfs:
+      - /run
+    ports:
+      - 2375:2375
+```
+
+```yml
+# config.yml on go-proxy machine
+autocert:
+    ... # your config
+
+providers:
+    include:
+        ...
+    docker:
+        ...
+        server1: tcp://<machine_ip>:2375
+```

examples/microbin.yml

@@ -0,0 +1,16 @@
+services:
+  app:
+    container_name: microbin
+    cpu_shares: 10
+    deploy:
+      resources:
+        limits:
+          memory: 256M
+    env_file: .env
+    image: docker.i.sh/danielszabo99/microbin:latest
+    ports:
+      - 8080
+    restart: unless-stopped
+    volumes:
+      - ./data:/app/microbin_data
+# microbin.domain.tld

examples/siyuan.yml

@@ -0,0 +1,16 @@
+services:
+  main:
+    image: b3log/siyuan:v3.1.0
+    container_name: siyuan
+    command:
+      - --workspace=/siyuan/workspace/
+      - --accessAuthCode=<some password>
+    user: 1000:1000
+    volumes:
+      - ./workspace:/siyuan/workspace
+    restart: unless-stopped
+    environment:
+      - TZ=Asia/Hong_Kong
+    ports:
+      - 6806
+# siyuan.domain.tld

src/docker/client.go

@@ -21,9 +21,8 @@ type Client struct {
 }
 
 func ParseDockerHostname(host string) (string, E.NestedError) {
-	if host == common.DockerHostFromEnv {
+	switch host {
-		return host, nil
+	case common.DockerHostFromEnv, "":
-	} else if host == "" {
 		return "localhost", nil
 	}
 	url, err := E.Check(client.ParseHostURL(host))

src/watcher/docker_watcher.go

@@ -2,6 +2,7 @@ package watcher
 
 import (
 	"context"
+	"fmt"
 	"time"
 
 	docker_events "github.com/docker/docker/api/types/events"
@@ -59,19 +60,28 @@ func (w DockerWatcher) EventsWithOptions(ctx context.Context, options DockerList
 		defer close(eventCh)
 		defer close(errCh)
 
+		defer func() {
+			if w.client.Connected() {
+				w.client.Close()
+			}
+		}()
+
 		if !w.client.Connected() {
 			var err E.NestedError
-			for range 3 {
+			for {
 				w.client, err = D.ConnectClient(w.host)
+				attempts := 0
 				if err != nil {
-					defer w.client.Close()
 					break
 				}
-				time.Sleep(1 * time.Second)
+				attempts++
-			}
+				errCh <- E.FailWith(fmt.Sprintf("docker connection attempt #%d", attempts), err)
-			if err.HasError() {
+				select {
-				errCh <- E.FailWith("docker connection", err)
+				case <-ctx.Done():
-				return
+					return
+				default:
+					time.Sleep(3 * time.Second)
+				}
 			}
 		}