Initial upload with full project structure

app/examples/complex.yaml

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+app_name: {{APP_NAME}}
+environment: {{environment}}
+
+{% if environment == "prod" %}
+production_mode: true
+{% endif %}
+
+database:
+  host: {{DB_HOST}}
+  port: {{DB_PORT}}
+  password: {{env.DB_PASSWORD}}
+  ssl: true
+
+api:
+  host: {{API_HOST}}
+  port: {{API_PORT}}
+  api_key: {{vault.SECRET_API_KEY}}
+  timeout: {{API_TIMEOUT}}
+
+logging:
+  level: {{LOG_LEVEL}}
+  format: "{{LOG_FORMAT}}"
+  secret_token: {{env.SECRET_LOG_TOKEN}}
+
+features:
+{% for feature in FEATURES %}
+  - name: {{feature.name}}
+    enabled: {{feature.enabled}}
+{% endfor %}
+
+services:
+{% for service in SERVICES %}
+  - name: {{service.name}}
+    host: {{service.host}}
+    port: {{service.port}}
+    replicas: {{service.replicas | default(1)}}
+{% endfor %}
+
+{% if USE_METRICS %}
+metrics:
+  enabled: true
+  endpoint: {{METRICS_ENDPOINT}}
+  auth_token: {{env.METRICS_TOKEN}}
+{% endif %}