docs: добавил env example

Co-authored-by: Copilot <copilot@github.com>

backend/docker-compose-test.yml

@@ -9,12 +9,32 @@ services:
       - "8088:8080"
     environment:
       - ASPNETCORE_FORWARDEDHEADERS_ENABLED=true
-      - AzureAd:Instance=https://login.microsoftonline.com/
-      - AzureAd:TenantId=sfedu.ru
-      - AzureAd:ClientId=
-      - AzureAd:ClientSecret=
-      - AzureAd:Domain=sfedu.onmicrosoft.com
-      - AzureAd:CallbackPath=/signin-oidc
+      
+      - AzureAd:Instance=${AzureAd_Instance:-https://login.microsoftonline.com/}
+      - AzureAd:TenantId=${AzureAd_TenantId:-sfedu.ru}
+      - AzureAd:ClientId=${AzureAd_ClientId}
+      - AzureAd:ClientSecret=${AzureAd_ClientSecret}
+      - AzureAd:Domain=${AzureAd_Domain:-sfedu.onmicrosoft.com}
+      - AzureAd:CallbackPath=${AzureAd_CallbackPath:-/signin-oidc}
+
+      - Jwt:Secret=${JWT_SECRET}
+      - Jwt:Issuer=${JWT_ISSUER:-UniVerse}
+      - Jwt:Audience=${JWT_AUDIENCE:-UniVerse}
+      - Jwt:AccessTokenExpirationMinutes=${JWT_EXPIRE_DAYS:-30}
+      - Jwt:RefreshTokenExpirationDays=${JWT_EXPIRE_DAYS:-30}
+
+      - Cors:Origins=${CORS_ALLOWED_ORIGINS:-http://localhost:3000}
+
+      - Llm:BaseUrl=${LLM_BASE_URL}
+      - Llm:ApiKey=${LLM_API_KEY}
+      - Llm:Model=${LLM_MODEL}
+
+      - ModeusApi:BaseUrl=${MODEUS_API_BASE_URL}
+      - ModeusApi:ApiKey=${MODEUS_API_KEY}
+
+      - Gamification:XpThresholds=${GAMIFICATION_XP_THRESHOLDS:[0, 100, 300, 600, 1000, 1500, 2500, 4000]}
+
+      - ConnectionStrings:DefaultConnection=Host=db;Port=5432;Database=${POSTGRES_DATABASE};Username=${POSTGRES_USER};Password=${POSTGRES_PASSWORD}
 
   db:
     image: postgres:18-alpine