feat: add DOCKER_HOST support

app/server/core/capabilities.ts

@@ -33,6 +33,18 @@ async function detectCapabilities(): Promise<SystemCapabilities> {
 	};
 }
 
+export const parseDockerHost = (dockerHost?: string) => {
+	const match = dockerHost?.match(/^(ssh|http|https):\/\/([^:]+)(?::(\d+))?$/);
+	if (match) {
+		const protocol = match[1] as "ssh" | "http" | "https";
+		const host = match[2];
+		const port = match[3] ? parseInt(match[3], 10) : undefined;
+		return { protocol, host, port };
+	}
+
+	return {};
+};
+
 /**
  * Checks if Docker is available by:
  * 1. Checking if /var/run/docker.sock exists and is accessible
@@ -40,9 +52,7 @@ async function detectCapabilities(): Promise<SystemCapabilities> {
  */
 async function detectDocker(): Promise<boolean> {
 	try {
-		await fs.access("/var/run/docker.sock");
+		const docker = new Docker(parseDockerHost(process.env.DOCKER_HOST));
-
-		const docker = new Docker();
 		await docker.ping();
 
 		logger.info("Docker capability: enabled");

app/server/modules/volumes/volume.service.ts

@@ -5,7 +5,7 @@ import Docker from "dockerode";
 import { and, eq, ne } from "drizzle-orm";
 import { ConflictError, InternalServerError, NotFoundError } from "http-errors-enhanced";
 import slugify from "slugify";
-import { getCapabilities } from "../../core/capabilities";
+import { getCapabilities, parseDockerHost } from "../../core/capabilities";
 import { db } from "../../db/db";
 import { volumesTable } from "../../db/schema";
 import { toMessage } from "../../utils/errors";
@@ -277,7 +277,8 @@ const getContainersUsingVolume = async (name: string) => {
 	}
 
 	try {
-		const docker = new Docker();
+		const docker = new Docker(parseDockerHost(process.env.DOCKER_HOST));
+
 		const containers = await docker.listContainers({ all: true });
 
 		const usingContainers = [];