diff --git "a/Homeworks/05 \320\243\320\277\320\260\320\272\320\276\320\262\320\272\320\260 \320\262 docker/src/.dockerignore" "b/Homeworks/05 \320\243\320\277\320\260\320\272\320\276\320\262\320\272\320\260 \320\262 docker/src/.dockerignore"
new file mode 100644
index 000000000..ea8a4774d
--- /dev/null
+++ "b/Homeworks/05 \320\243\320\277\320\260\320\272\320\276\320\262\320\272\320\260 \320\262 docker/src/.dockerignore"	
@@ -0,0 +1,19 @@
+# Общие системные файлы
+.gitignore
+.idea
+.vscode
+.vs
+bin
+obj
+*.sqlite
+
+# Docker и окружение
+docker/volumes/
+docker/.env*
+docker-compose*.yml
+
+# Не тянем тесты в образ
+PromoCodeFactory.UnitTests/
+
+# Исключаем локальные publish-артефакты (если есть)
+publish/
diff --git "a/Homeworks/05 \320\243\320\277\320\260\320\272\320\276\320\262\320\272\320\260 \320\262 docker/src/PromoCodeFactory.DataAccess/DependencyInjection.cs" "b/Homeworks/05 \320\243\320\277\320\260\320\272\320\276\320\262\320\272\320\260 \320\262 docker/src/PromoCodeFactory.DataAccess/DependencyInjection.cs"
index 309297b94..7b462ed89 100644
--- "a/Homeworks/05 \320\243\320\277\320\260\320\272\320\276\320\262\320\272\320\260 \320\262 docker/src/PromoCodeFactory.DataAccess/DependencyInjection.cs"	
+++ "b/Homeworks/05 \320\243\320\277\320\260\320\272\320\276\320\262\320\272\320\260 \320\262 docker/src/PromoCodeFactory.DataAccess/DependencyInjection.cs"	
@@ -14,9 +14,9 @@ public static void AddEfDataAccess(this IServiceCollection services)
     {
         services.AddDbContext<PromoCodeFactoryDbContext>((sp, builder) =>
         {
-            var conncetionString = sp.GetRequiredService<IConfiguration>().GetConnectionString("PromocodeFactoryDb")
-                ?? "Filename=PromoCodeFactory.sqlite";
-            builder.UseSqlite(conncetionString);
+            var connectionString = sp.GetRequiredService<IConfiguration>().GetConnectionString("Default")
+                ?? throw new NotSupportedException("ConnectionStrings:Default not  set");
+            builder.UseSqlite(connectionString);
         });
 
         services.AddScoped<IRepository<Employee>, EmployeeEfRepository>();
diff --git "a/Homeworks/05 \320\243\320\277\320\260\320\272\320\276\320\262\320\272\320\260 \320\262 docker/src/PromoCodeFactory.WebHost/appsettings.json" "b/Homeworks/05 \320\243\320\277\320\260\320\272\320\276\320\262\320\272\320\260 \320\262 docker/src/PromoCodeFactory.WebHost/appsettings.json"
index 3d760c5fe..91f137bf3 100644
--- "a/Homeworks/05 \320\243\320\277\320\260\320\272\320\276\320\262\320\272\320\260 \320\262 docker/src/PromoCodeFactory.WebHost/appsettings.json"	
+++ "b/Homeworks/05 \320\243\320\277\320\260\320\272\320\276\320\262\320\272\320\260 \320\262 docker/src/PromoCodeFactory.WebHost/appsettings.json"	
@@ -12,7 +12,7 @@
         }
     },
     "ConnectionStrings": {
-        "PromocodeFactoryDb": "Filename=PromoCodeFactory.sqlite"
+        "Default": "Filename=PromoCodeFactory.sqlite"
     },
     "AllowedHosts": "*"
 }
diff --git "a/Homeworks/05 \320\243\320\277\320\260\320\272\320\276\320\262\320\272\320\260 \320\262 docker/src/docker/.env" "b/Homeworks/05 \320\243\320\277\320\260\320\272\320\276\320\262\320\272\320\260 \320\262 docker/src/docker/.env"
new file mode 100644
index 000000000..6aa40124c
--- /dev/null
+++ "b/Homeworks/05 \320\243\320\277\320\260\320\272\320\276\320\262\320\272\320\260 \320\262 docker/src/docker/.env"	
@@ -0,0 +1,10 @@
+ASPNETCORE_ENVIRONMENT=Development
+HTTP_PORT_EXT=8091
+HTTP_PORT_INT=8080
+
+SQL_LITE_PATH=/webhost/db
+SQL_LITE_NAME=PromoCodeFactory.sqlite
+
+# Внутри контейнера используется своя собственная сеть
+# в контейнере свой <ConnectionStrings__Default> (перекрывает appsettings.Development.json)
+# см. docker-compose.yml
diff --git "a/Homeworks/05 \320\243\320\277\320\260\320\272\320\276\320\262\320\272\320\260 \320\262 docker/src/docker/HW05.Dockerfile" "b/Homeworks/05 \320\243\320\277\320\260\320\272\320\276\320\262\320\272\320\260 \320\262 docker/src/docker/HW05.Dockerfile"
new file mode 100644
index 000000000..bd7124180
--- /dev/null
+++ "b/Homeworks/05 \320\243\320\277\320\260\320\272\320\276\320\262\320\272\320\260 \320\262 docker/src/docker/HW05.Dockerfile"	
@@ -0,0 +1,25 @@
+# build
+FROM mcr.microsoft.com/dotnet/sdk:10.0 AS build
+
+WORKDIR /src
+# сначала только csproj — лучше кэшируется (все зависимые проекты тоже)
+COPY ./PromoCodeFactory.Core/PromoCodeFactory.Core.csproj ./PromoCodeFactory.Core/
+COPY ./PromoCodeFactory.DataAccess/PromoCodeFactory.DataAccess.csproj ./PromoCodeFactory.DataAccess/
+COPY ./PromoCodeFactory.WebHost/PromoCodeFactory.WebHost.csproj ./PromoCodeFactory.WebHost/
+
+RUN dotnet restore ./PromoCodeFactory.WebHost/PromoCodeFactory.WebHost.csproj
+
+# теперь весь код
+COPY ./PromoCodeFactory.Core/ ./PromoCodeFactory.Core/
+COPY ./PromoCodeFactory.DataAccess/ ./PromoCodeFactory.DataAccess/
+COPY ./PromoCodeFactory.WebHost/ ./PromoCodeFactory.WebHost/
+
+RUN dotnet publish ./PromoCodeFactory.WebHost -c Release -o /app/publish
+
+# run
+FROM mcr.microsoft.com/dotnet/aspnet:10.0 AS final
+WORKDIR /app
+COPY --from=build /app/publish ./
+ARG API_PORT_INT
+EXPOSE ${API_PORT_INT}
+ENTRYPOINT ["dotnet","PromoCodeFactory.WebHost.dll"]
diff --git "a/Homeworks/05 \320\243\320\277\320\260\320\272\320\276\320\262\320\272\320\260 \320\262 docker/src/docker/docker-compose.yml" "b/Homeworks/05 \320\243\320\277\320\260\320\272\320\276\320\262\320\272\320\260 \320\262 docker/src/docker/docker-compose.yml"
new file mode 100644
index 000000000..765bcb684
--- /dev/null
+++ "b/Homeworks/05 \320\243\320\277\320\260\320\272\320\276\320\262\320\272\320\260 \320\262 docker/src/docker/docker-compose.yml"	
@@ -0,0 +1,24 @@
+name: promocode-factory
+
+services:
+  promocode-factory-api:
+    build:
+      context: ..
+      dockerfile: docker/HW05.Dockerfile
+      args:
+        API_PORT_INT: ${HTTP_PORT_INT}
+    env_file:
+      - .env
+    volumes:
+      - sqlite-data:${SQL_LITE_PATH}
+    environment:
+      # перекрывает appsettings.Development.json:
+      ConnectionStrings__Default: "Filename=${SQL_LITE_PATH}/${SQL_LITE_NAME}"
+      ASPNETCORE_ENVIRONMENT: ${ASPNETCORE_ENVIRONMENT}
+      ASPNETCORE_HTTP_PORTS: "${HTTP_PORT_INT}"
+    ports:
+      - "${HTTP_PORT_EXT}:${HTTP_PORT_INT}"
+
+volumes:
+  sqlite-data:
+    name: db