Update workflow to dump Docker logs on failure and improve PostgreSQL container configuration

- Add Docker logs capturing step in GitHub Actions workflow for better debugging.
- Update PostgreSQL test container to use `postgres:16-alpine` with enhanced configuration options.
- Set database connection `Max Pool Size` to 20 in component tests.

.github/workflows/packages.yml

@@ -70,6 +70,17 @@ jobs:
             dotnet test "$project" --configuration Release --no-build --logger "GitHubActions;report-warnings=false" /p:CollectCoverage=true
           done
 
+      - name: Dump docker logs on failure
+        if: failure()
+        run: |
+          echo "=== Docker containers ==="
+          docker ps -a || true
+          echo "=== Docker logs ==="
+          for container in $(docker ps -aq); do
+            echo "--- Logs for container $container ---"
+            docker logs "$container" 2>&1 | tail -100 || true
+          done
+
       - name: Install ReportGenerator
         run: dotnet tool install -g dotnet-reportgenerator-globaltool
 

test/component/Elsa.Workflows.ComponentTests/Helpers/Fixtures/Infrastructure.cs

@@ -6,10 +6,17 @@ namespace Elsa.Workflows.ComponentTests.Fixtures;
 public class Infrastructure : IAsyncLifetime
 {
     public readonly PostgreSqlContainer DbContainer = new PostgreSqlBuilder()
-        .WithImage("postgres:latest")
+        .WithImage("postgres:16-alpine")
         .WithDatabase("elsa")
         .WithUsername("postgres")
         .WithPassword("postgres")
+        .WithCommand(
+            "postgres",
+            "-c", "max_connections=25",
+            "-c", "shared_buffers=128MB",
+            "-c", "work_mem=4MB",
+            "-c", "effective_cache_size=256MB"
+        )
         .Build();
 
     public readonly RabbitMqContainer RabbitMqContainer = new RabbitMqBuilder()

test/component/Elsa.Workflows.ComponentTests/Helpers/Fixtures/WorkflowServer.cs

@@ -55,7 +55,7 @@ public class WorkflowServer(Infrastructure infrastructure, string url) : WebAppl
 
     protected override void ConfigureWebHost(IWebHostBuilder builder)
     {
-        var dbConnectionString = infrastructure.DbContainer.GetConnectionString();
+        var dbConnectionString = infrastructure.DbContainer.GetConnectionString() + ";Max Pool Size=20;";
         var rabbitMqConnectionString = infrastructure.RabbitMqContainer.GetConnectionString();
 
         builder.UseUrls(url);