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## Compose sample application: ASP.NET with MS SQL server database
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Project structure:
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```
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.
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├── app
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│ ├── aspnetapp
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│ │ ├── appsettings.Development.json
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| | └── ...
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│ ├── ...
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│ └── Dockerfile
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└── compose.yaml
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```
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[_compose.yaml_](compose.yaml)
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```
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services:
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web:
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build: app
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ports:
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- 80:80
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db:
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# mssql server image isn't available for arm64 architecture, so we use azure-sql instead
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image: mcr.microsoft.com/azure-sql-edge:1.0.4
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# If you really want to use MS SQL Server, uncomment the following line
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#image: mcr.microsoft.com/mssql/server
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...
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```
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The compose file defines an application with two services `web` and `db`. The image for the web service is built with the Dockerfile inside the `app` directory (build parameter).
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When deploying the application, docker compose maps the container port 80 to port 80 of the host as specified in the file.
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Make sure port 80 on the host is not being used by another container, otherwise the port should be changed.
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> ℹ️ **_INFO_**
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> For compatibility purpose between `AMD64` and `ARM64` architecture, we use Azure SQL Edge as database instead of MS SQL Server.
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> You still can use the MS SQL Server image by uncommenting the following line in the Compose file
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> `#image: mcr.microsoft.com/mssql/server`
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## Deploy with docker compose
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```
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$ docker compose up -d
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Creating network "aspnet-mssql_default" with the default driver
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Building web
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Step 1/13 : FROM mcr.microsoft.com/dotnet/sdk:5.0 AS build
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2.1: Pulling from dotnet/core/sdk
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....
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....
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a9dca2f6722a: Pull complete
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Digest: sha256:9b700672670bb3db4b212e8aef841ca79eb2fce7d5975a5ce35b7129a9b90ec0
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Status: Downloaded newer image for microsoft/mssql-server-linux:latest
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Creating aspnet-mssql_web_1 ... done
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Creating aspnet-mssql_db_1 ... done
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```
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## Expected result
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Listing containers must show two containers running and the port mapping as below:
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```
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$ docker ps
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CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
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7f3a2a7ea5c0 microsoft/mssql-server-linux "/opt/mssql/bin/sqls…" 4 minutes ago Up 4 minutes 1433/tcp aspnet-mssql_db_1
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27342dde8b64 aspnet-mssql_web "dotnet aspnetapp.dll" 4 minutes ago Up 4 minutes 0.0.0.0:80->80/tcp aspnet-mssql_web_1
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```
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After the application starts, navigate to `http://localhost:80` in your web browser.
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Stop and remove the containers
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```
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$ docker compose down
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```
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