feat(docker): add Docker resources

examples/docker-postgres/README.md

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+# Docker PostgreSQL Example
+
+This example provisions PostgreSQL 18 Alpine with Docker resources:
+
+- `Docker.RemoteImage` pulls `postgres:18-alpine`
+- `Docker.Network` creates an app network
+- `Docker.Volume` creates persistent database storage
+- `Docker.Container` starts PostgreSQL with a redacted password, a network alias, a named volume, and a host port
+- `Docker.Container.inspect` returns the bound host port
+
+Docker resources use the active Docker CLI context. That can be Docker Desktop, a remote Docker host, an SSH context, or a CI runner daemon.
+
+These resources are separate from `Cloudflare.Container`. The bridge between Docker and cloud container platforms is an image reference or registry digest, not a swappable container object.
+
+## Commands
+
+```sh
+bun install
+POSTGRES_PASSWORD=change-me bun run --filter docker-postgres-example deploy
+bun run --filter docker-postgres-example destroy
+```
+
+If `POSTGRES_PASSWORD` is omitted, the example uses a redacted development default.
+
+The stack publishes PostgreSQL on `localhost:15432`:
+
+```sh
+psql postgres://alchemy:change-me@localhost:15432/app
+```

examples/docker-postgres/alchemy.run.ts

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+import * as Alchemy from "alchemy";
+import * as Docker from "alchemy/Docker";
+import * as Config from "effect/Config";
+import * as Effect from "effect/Effect";
+import * as Redacted from "effect/Redacted";
+
+const POSTGRES_PORT = 15432;
+const POSTGRES_CONTAINER = "alchemy-example-postgres";
+const EMPTY_RUNTIME: Docker.ContainerRuntimeInfo = { ports: {} };
+
+export default Alchemy.Stack(
+  "DockerPostgresExample",
+  { providers: Docker.providers(), state: Alchemy.localState() },
+  Effect.gen(function* () {
+    const password = yield* Config.redacted("POSTGRES_PASSWORD").pipe(
+      Config.withDefault(Redacted.make("alchemy-postgres")),
+    );
+
+    const image = yield* Docker.RemoteImage("postgres-image", {
+      name: "postgres",
+      tag: "18-alpine",
+      alwaysPull: false,
+    });
+    const network = yield* Docker.Network("app-network");
+    const data = yield* Docker.Volume("postgres-data");
+
+    const postgres = yield* Docker.Container("postgres", {
+      name: POSTGRES_CONTAINER,
+      image,
+      environment: {
+        POSTGRES_DB: "app",
+        POSTGRES_USER: "alchemy",
+        POSTGRES_PASSWORD: password,
+      },
+      ports: [{ external: POSTGRES_PORT, internal: 5432 }],
+      volumes: [
+        {
+          hostPath: data.name,
+          containerPath: "/var/lib/postgresql/data",
+        },
+      ],
+      networks: [{ name: network.name, aliases: ["postgres"] }],
+      healthcheck: {
+        cmd: ["CMD-SHELL", "pg_isready -U alchemy -d app"],
+        interval: "5s",
+        timeout: "5s",
+        retries: 10,
+      },
+      start: true,
+    });
+
+    const runtime = yield* Docker.Container.inspect(POSTGRES_CONTAINER).pipe(
+      Effect.catchTag("DockerCommandError", () =>
+        Effect.succeed(EMPTY_RUNTIME),
+      ),
+    );
+
+    return {
+      container: postgres.name,
+      image: image.imageRef,
+      network: network.name,
+      volume: data.name,
+      hostPort: runtime.ports["5432/tcp"] ?? POSTGRES_PORT,
+      connectionString: `postgres://alchemy:***@localhost:${POSTGRES_PORT}/app`,
+    };
+  }),
+);

examples/docker-postgres/package.json

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+{
+  "name": "docker-postgres-example",
+  "version": "0.0.0",
+  "private": true,
+  "license": "Apache-2.0",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/alchemy-run/alchemy-effect.git",
+    "directory": "examples/docker-postgres"
+  },
+  "type": "module",
+  "scripts": {
+    "deploy": "alchemy deploy",
+    "destroy": "alchemy destroy",
+    "build": "tsgo --noEmit -p tsconfig.json"
+  },
+  "dependencies": {
+    "alchemy": "workspace:*",
+    "effect": "catalog:"
+  }
+}

examples/docker-postgres/tsconfig.json

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+{
+  "extends": "../../tsconfig.base.json",
+  "include": ["alchemy.run.ts"],
+  "compilerOptions": {
+    "noEmit": true,
+    "rootDir": ".",
+    "module": "Preserve",
+    "moduleResolution": "Bundler",
+    "target": "ESNext"
+  },
+  "references": [
+    {
+      "path": "../../packages/alchemy/tsconfig.json"
+    }
+  ]
+}

packages/alchemy/package.json

@@ -107,6 +107,12 @@
       "worker": "./src/Bundle/index.ts",
       "import": "./lib/Bundle/index.js"
     },
+    "./Docker": {
+      "types": "./lib/Docker/index.d.ts",
+      "bun": "./src/Docker/index.ts",
+      "worker": "./src/Docker/index.ts",
+      "import": "./lib/Docker/index.js"
+    },
     "./ContentType": {
       "types": "./lib/ContentType.d.ts",
       "bun": "./src/ContentType.ts",