feat(socket-proxy): implement Docker socket proxy and related configurations

- Updated Dockerfile and Makefile for socket-proxy build.
- Modified go.mod to include necessary dependencies.
- Updated CI workflows for socket-proxy integration.
- Better module isolation
- Code refactor

socket-proxy/pkg/env.go

@@ -0,0 +1,101 @@
+package socketproxy
+
+import (
+	"log"
+	"os"
+	"strconv"
+)
+
+var (
+	DockerSocket,
+	ListenAddr string
+
+	DockerPost,
+	DockerRestarts,
+	DockerStart,
+	DockerStop,
+	DockerAuth,
+	DockerBuild,
+	DockerCommit,
+	DockerConfigs,
+	DockerContainers,
+	DockerDistribution,
+	DockerEvents,
+	DockerExec,
+	DockerGrpc,
+	DockerImages,
+	DockerInfo,
+	DockerNetworks,
+	DockerNodes,
+	DockerPing,
+	DockerPlugins,
+	DockerSecrets,
+	DockerServices,
+	DockerSession,
+	DockerSwarm,
+	DockerSystem,
+	DockerTasks,
+	DockerVersion,
+	DockerVolumes bool
+)
+
+func init() {
+	Load()
+}
+
+func GetEnv[T any](key string, defaultValue T, parser func(string) (T, error)) T {
+	value, ok := os.LookupEnv(key)
+	if !ok || value == "" {
+		return defaultValue
+	}
+	parsed, err := parser(value)
+	if err != nil {
+		log.Fatalf("env %s: invalid %T value: %s", key, parsed, value)
+	}
+	return parsed
+}
+
+func GetEnvString(key string, defaultValue string) string {
+	return GetEnv(key, defaultValue, stringstring)
+}
+
+func GetEnvBool(key string, defaultValue bool) bool {
+	return GetEnv(key, defaultValue, strconv.ParseBool)
+}
+
+func stringstring(s string) (string, error) {
+	return s, nil
+}
+
+func Load() {
+	DockerSocket = GetEnvString("DOCKER_SOCKET", GetEnvString("DOCKER_HOST", "/var/run/docker.sock"))
+	ListenAddr = GetEnvString("LISTEN_ADDR", GetEnvString("DOCKER_SOCKET_ADDR", "")) // default to disabled
+
+	DockerPost = GetEnvBool("POST", false)
+	DockerRestarts = GetEnvBool("ALLOW_RESTARTS", false)
+	DockerStart = GetEnvBool("ALLOW_START", false)
+	DockerStop = GetEnvBool("ALLOW_STOP", false)
+	DockerAuth = GetEnvBool("AUTH", false)
+	DockerBuild = GetEnvBool("BUILD", false)
+	DockerCommit = GetEnvBool("COMMIT", false)
+	DockerConfigs = GetEnvBool("CONFIGS", false)
+	DockerContainers = GetEnvBool("CONTAINERS", false)
+	DockerDistribution = GetEnvBool("DISTRIBUTION", false)
+	DockerEvents = GetEnvBool("EVENTS", true)
+	DockerExec = GetEnvBool("EXEC", false)
+	DockerGrpc = GetEnvBool("GRPC", false)
+	DockerImages = GetEnvBool("IMAGES", false)
+	DockerInfo = GetEnvBool("INFO", false)
+	DockerNetworks = GetEnvBool("NETWORKS", false)
+	DockerNodes = GetEnvBool("NODES", false)
+	DockerPing = GetEnvBool("PING", true)
+	DockerPlugins = GetEnvBool("PLUGINS", false)
+	DockerSecrets = GetEnvBool("SECRETS", false)
+	DockerServices = GetEnvBool("SERVICES", false)
+	DockerSession = GetEnvBool("SESSION", false)
+	DockerSwarm = GetEnvBool("SWARM", false)
+	DockerSystem = GetEnvBool("SYSTEM", false)
+	DockerTasks = GetEnvBool("TASKS", false)
+	DockerVersion = GetEnvBool("VERSION", true)
+	DockerVolumes = GetEnvBool("VOLUMES", false)
+}