Merge pull request #1559 from StackExchange/craver/docker-bits

Let's get the first version of this going. If you want to try locally:
1. Start the servers (ensuring you have no conflicting port usage - shut down locals if so):
```bash
cd /tests/
docker-compose up
```
Run tests:
```bash
cd <repo root>
dotnet test Build.csproj
```

Author: NickCraver

.github/workflows/main.yml

@@ -0,0 +1,60 @@
+name: Main Build
+
+on:
+  pull_request:
+  push:
+    branches:
+    - main
+    paths:
+    - '*'
+    - '!/docs/*' # Don't run workflow when files are only in the /docs directory
+
+jobs:
+  vm-job:
+    name: Ubuntu
+    runs-on: ubuntu-latest
+    services:
+      postgres:
+        image: postgres
+        ports:
+        - 5432/tcp
+        env:
+          POSTGRES_USER: postgres
+          POSTGRES_PASSWORD: postgres
+          POSTGRES_DB: test
+        options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
+      sqlserver:
+        image: mcr.microsoft.com/mssql/server:2019-latest
+        ports:
+        - 1433/tcp
+        env:
+          ACCEPT_EULA: Y
+          SA_PASSWORD: "Password."
+      mysql:
+        image: mysql
+        ports:
+        - 3306/tcp
+        env:
+          MYSQL_ROOT_PASSWORD: root
+          MYSQL_DATABASE: test
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v1
+    - name: .NET Build
+      run: dotnet build Build.csproj -c Release /p:CI=true
+    - name: Dapper Tests
+      run: dotnet test tests/Dapper.Tests/Dapper.Tests.csproj -c Release --logger GitHubActions /p:CI=true
+      env:
+        MySqlConnectionString: Server=localhost;Port=${{ job.services.mysql.ports[3306] }};Uid=root;Pwd=root;Database=test;Allow User Variables=true
+        OLEDBConnectionString: Provider=SQLOLEDB;Server=tcp:localhost,${{ job.services.sqlserver.ports[1433] }};Database=tempdb;User Id=sa;Password=Password.;
+        PostgesConnectionString: Server=localhost;Port=${{ job.services.postgres.ports[5432] }};Database=test;User Id=postgres;Password=postgres;
+        SqlServerConnectionString: Server=tcp:localhost,${{ job.services.sqlserver.ports[1433] }};Database=tempdb;User Id=sa;Password=Password.;
+    - name: Dapper.Contrib Tests
+      run: dotnet test tests/Dapper.Tests.Contrib/Dapper.Tests.Contrib.csproj -c Release --logger GitHubActions /p:CI=true
+      env:
+        MySqlConnectionString: Server=localhost;Port=${{ job.services.mysql.ports[3306] }};Uid=root;Pwd=root;Database=test;Allow User Variables=true
+        OLEDBConnectionString: Provider=SQLOLEDB;Server=tcp:localhost,${{ job.services.sqlserver.ports[1433] }};Database=tempdb;User Id=sa;Password=Password.;
+        PostgesConnectionString: Server=localhost;Port=${{ job.services.postgres.ports[5432] }};Database=test;User Id=postgres;Password=postgres;
+        SqlServerConnectionString: Server=tcp:localhost,${{ job.services.sqlserver.ports[1433] }};Database=tempdb;User Id=sa;Password=Password.;
+    - name: .NET Lib Pack
+      run: dotnet pack Build.csproj --no-build -c Release /p:PackageOutputPath=%CD%\.nupkgs /p:CI=true

tests/Dapper.Tests/QueryMultipleTests.cs

@@ -236,7 +236,7 @@ private void TestMultiSelectWithSomeEmptyGrids(bool buffered)
                 }
                 catch (ObjectDisposedException ex)
                 { // expected; success
-                    Assert.Equal("The reader has been disposed; this can happen after all data has been consumed\r\nObject name: 'Dapper.SqlMapper+GridReader'.", ex.Message);
+                    Assert.Equal("The reader has been disposed; this can happen after all data has been consumed\r\nObject name: 'Dapper.SqlMapper+GridReader'.", ex.Message, ignoreLineEndingDifferences: true);
                 }
 
                 Assert.Single(one);

tests/Directory.Build.props

@@ -6,6 +6,7 @@
     <GenerateDocumentationFile>false</GenerateDocumentationFile>
     <TreatWarningsAsErrors>false</TreatWarningsAsErrors>
     <IsPackable>false</IsPackable>
+    <CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
 
     <DebugType>Full</DebugType>
     <DefineConstants Condition="'$(OS)' == 'Windows_NT'">$(DefineConstants);WINDOWS</DefineConstants>
@@ -14,6 +15,7 @@
   <ItemGroup>
     <ProjectReference Include="../../Dapper/Dapper.csproj" />
     <ProjectReference Include="../../Dapper.Contrib/Dapper.Contrib.csproj" />
+    <PackageReference Include="GitHubActionsTestLogger" Version="1.1.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.3.0" />
     <PackageReference Include="xunit" Version="2.4.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.1" />

tests/docker-compose.yml

@@ -0,0 +1,27 @@
+version: "3"
+services:
+  mysql:
+    image: mysql:8
+    container_name: mysql
+    ports:
+      - 3306:3306
+    environment:
+      MYSQL_ROOT_PASSWORD: root
+      MYSQL_DATABASE: test
+  postgres:
+    image: postgres:alpine
+    container_name: postgres
+    ports:
+      - 5432:5432
+    environment:
+      POSTGRES_USER: postgres
+      POSTGRES_PASSWORD: postgres
+      POSTGRES_DB: test
+  sqlserver:
+    image: mcr.microsoft.com/mssql/server:2019-latest
+    container_name: sql-server-db
+    ports:
+      - 1433:1433
+    environment:
+      ACCEPT_EULA: Y
+      SA_PASSWORD: "Password."