Add PostgreSQL 18 infra sample

.project/infrastructure/README.md

@@ -0,0 +1,7 @@
+# Dew Infrastructure Samples
+
+This directory contains sample services that exercise `dew infra` using the same
+layout a project would use for local infrastructure.
+
+Each service lives under `services/<service-id>/` and is discovered from its
+`manifest.yaml`.

.project/infrastructure/services/postgresql-18/README.md

@@ -0,0 +1,25 @@
+# PostgreSQL 18
+
+Sample local PostgreSQL 18 service managed by `dew infra` and Podman Quadlets.
+
+```bash
+dew infra validate postgresql-18
+dew infra up postgresql-18
+dew infra status postgresql-18
+dew infra logs postgresql-18 --lines 100
+```
+
+The sample binds PostgreSQL to `127.0.0.1:5432` with:
+
+- database: `dew`
+- user: `dew`
+- password: `dew_dev_password`
+- data volume: `dew_postgresql_18_data`
+
+Stop it with:
+
+```bash
+dew infra down postgresql-18
+```
+
+The named volume is intentionally retained after stopping the service.

.project/infrastructure/services/postgresql-18/configure.schema.json

@@ -0,0 +1,36 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "$id": "https://artificery.dev/dew/samples/postgresql-18/configure.schema.json",
+  "title": "PostgreSQL 18 Sample Configuration",
+  "description": "Configuration values represented by the sample PostgreSQL 18 Quadlet.",
+  "type": "object",
+  "additionalProperties": false,
+  "properties": {
+    "host_port": {
+      "type": "integer",
+      "minimum": 1,
+      "maximum": 65535,
+      "default": 5432
+    },
+    "database": {
+      "type": "string",
+      "minLength": 1,
+      "default": "dew"
+    },
+    "username": {
+      "type": "string",
+      "minLength": 1,
+      "default": "dew"
+    },
+    "password": {
+      "type": "string",
+      "minLength": 8,
+      "default": "dew_dev_password"
+    },
+    "volume": {
+      "type": "string",
+      "minLength": 1,
+      "default": "dew_postgresql_18_data"
+    }
+  }
+}

.project/infrastructure/services/postgresql-18/dew_postgresql_18.container

@@ -0,0 +1,24 @@
+[Unit]
+Description=Dew sample PostgreSQL 18 database
+Wants=network-online.target
+After=network-online.target
+
+[Container]
+Image=docker.io/library/postgres:18
+ContainerName=dew_postgresql_18
+Environment=POSTGRES_DB=dew
+Environment=POSTGRES_USER=dew
+Environment=POSTGRES_PASSWORD=dew_dev_password
+PublishPort=127.0.0.1:5432:5432
+Volume=dew_postgresql_18_data:/var/lib/postgresql/data:Z
+HealthCmd=pg_isready -U dew -d dew
+HealthInterval=10s
+HealthTimeout=5s
+HealthRetries=5
+
+[Service]
+Restart=on-failure
+TimeoutStartSec=120
+
+[Install]
+WantedBy=default.target

.project/infrastructure/services/postgresql-18/dew_postgresql_18.container.d/.gitkeep

@@ -0,0 +1 @@
+

.project/infrastructure/services/postgresql-18/dew_postgresql_18.profiles.d/.gitkeep

@@ -0,0 +1 @@
+

.project/infrastructure/services/postgresql-18/init.schema.json

@@ -0,0 +1,22 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "$id": "https://artificery.dev/dew/samples/postgresql-18/init.schema.json",
+  "title": "PostgreSQL 18 Sample Initialization",
+  "description": "Optional initialization notes for the sample PostgreSQL 18 service.",
+  "type": "object",
+  "additionalProperties": false,
+  "properties": {
+    "create_database": {
+      "type": "boolean",
+      "default": true
+    },
+    "seed_sample_data": {
+      "type": "boolean",
+      "default": false
+    },
+    "notes": {
+      "type": "string",
+      "default": ""
+    }
+  }
+}

.project/infrastructure/services/postgresql-18/manifest.yaml

@@ -0,0 +1,17 @@
+service:
+  id: postgresql-18
+  name: PostgreSQL 18
+  unit: dew_postgresql_18.service
+  container_name: dew_postgresql_18
+
+runtime:
+  type: podman-quadlet
+
+container:
+  file: dew_postgresql_18.container
+  dropins_dir: dew_postgresql_18.container.d
+  profiles_dir: dew_postgresql_18.profiles.d
+
+schemas:
+  configure: configure.schema.json
+  init: init.schema.json

.project/kanban/done/DEW-0031.md

@@ -0,0 +1,8 @@
+---
+id: DEW-0031
+title: Add PostgreSQL 18 infra sample
+type: task
+created: 2026-05-05T03:31:50.153499Z
+---
+
+Add a sample Dew infrastructure service that brings up PostgreSQL 18 through a Podman Quadlet manifest, including manifest.yaml, schemas, profile/drop-in directories, and documentation.

docs/features/infra.md

@@ -73,3 +73,16 @@ user systemd path or `--scope system` for `/etc/containers/systemd`.
 
 `dew infra up` installs missing Quadlet files, reloads systemd, then starts the
 unit.
+
+## Samples
+
+The Dew repository includes sample service bringups under
+`.project/infrastructure/services/`.
+
+`postgresql-18` brings up a local PostgreSQL 18 container through Podman
+Quadlets:
+
+```bash
+dew infra validate postgresql-18
+dew infra up postgresql-18
+```

packages/infra/lib/src/infra_runtime.dart

@@ -245,7 +245,7 @@ class PodmanQuadletRuntime implements ContainerRuntime {
         () => fs.directory(targetDropins).create(recursive: true),
       );
       await for (final entity in fs.directory(dropinsPath).list()) {
-        if (entity is! File) continue;
+        if (entity is! File || p.extension(entity.path) != '.conf') continue;
         await _link(
           actions,
           dryRun,