How to run Aspose.PDF for .NET 6 in Docker
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Prerequisites
The following examples tested with:
- Docker v.20.10.11 and Docker Desktop 4.3.2
- Visual Studio 2022 Community Edition v.17.0.5
- .NET 6 SDK is used in the example provided below.
- Aspose.PDF for .NET v.22.01
Create sample application for Docker Linux Container
- Launch Visual Studio 2022 and choose ASP.NET Core Web App (Model-View-Controller) template and press Next
- In Configure your new project window set desired project name and location and press Next
- In Additional information window choose .NET 6.0 (Long-term support) and enable Docker support. You can also set Docker OS to Linux if needed.
- Press Create
- Choose Tools->Nuget Package Manager->Package Manager Console and install Aspose.PDF for .NET (use command
Install-Package Aspose.PDF
)
Generate PDF document using ASP.NET Core Web App in Linux container
We will use code from Complex Example in this app. Please follow this link for a more detailed explanation.
- Create an
images
folder in thewwwroot
folder and put the imagelogo.png
. You can use download this image from here - Replace code in
HomeController.cs
with the following snippet (please note that you can have another namespace):
The following code snippet also works with Aspose.PDF.Drawing library.
using Aspose.Pdf;
using Aspose.Pdf.Text;
using Docker.Linux.Demo01.Models;
using Microsoft.AspNetCore.Mvc;
using System.Diagnostics;
namespace Docker.Linux.Demo01.Controllers
{
public class HomeController : Controller
{
private readonly ILogger<HomeController> _logger;
private readonly IWebHostEnvironment _appEnvironment;
public HomeController(ILogger<HomeController> logger, IWebHostEnvironment appEnvironment)
{
_logger = logger;
_appEnvironment = appEnvironment;
}
public IActionResult Index()
{
return View();
}
public IActionResult Generate()
{
const string file_type = "application/pdf";
const string file_name = "sample.pdf";
var memoryStream = new System.IO.MemoryStream();
_logger.LogInformation("Start");
// Initialize document object
var document = new Document();
// Add page
var page = document.Pages.Add();
// Add image
var imageFileName = System.IO.Path.Combine(_appEnvironment.WebRootPath, "images", "logo.png");
page.AddImage(imageFileName, new Rectangle(20, 730, 120, 830));
// -------------------------------------------------------------
// Add Header
var header = new TextFragment("New ferry routes in Fall 2020");
header.TextState.Font = FontRepository.FindFont("Arial");
header.TextState.FontSize = 24;
header.HorizontalAlignment = HorizontalAlignment.Center;
header.Position = new Position(130, 720);
page.Paragraphs.Add(header);
// Add description
var descriptionText = "Visitors must buy tickets online and tickets are limited to 5,000 per day. Ferry service is operating at half capacity and on a reduced schedule. Expect lineups.";
var description = new TextFragment(descriptionText);
description.TextState.Font = FontRepository.FindFont("Times New Roman");
description.TextState.FontSize = 14;
description.HorizontalAlignment = HorizontalAlignment.Left;
page.Paragraphs.Add(description);
// Add table
var table = new Table
{
ColumnWidths = "200",
Border = new BorderInfo(BorderSide.Box, 1f, Color.Black),
DefaultCellBorder = new BorderInfo(BorderSide.Box, 0.5f, Color.Gray),
DefaultCellPadding = new MarginInfo(4.5, 4.5, 4.5, 4.5),
Margin =
{
Top = 10,
Bottom = 10
},
DefaultCellTextState =
{
Font = FontRepository.FindFont("Helvetica")
}
};
var headerRow = table.Rows.Add();
headerRow.Cells.Add("Departs City");
headerRow.Cells.Add("Departs Island");
foreach (Cell headerRowCell in headerRow.Cells)
{
headerRowCell.BackgroundColor = Color.LightGray;
headerRowCell.DefaultCellTextState.ForegroundColor = Color.FromRgb(0.1, 0.1, 0.1);
}
var time = new TimeSpan(6, 0, 0);
var incTime = new TimeSpan(0, 30, 0);
for (int i = 0; i < 10; i++)
{
var dataRow = table.Rows.Add();
dataRow.Cells.Add(time.ToString(@"hh\:mm"));
time = time.Add(incTime);
dataRow.Cells.Add(time.ToString(@"hh\:mm"));
}
page.Paragraphs.Add(table);
document.Save(memoryStream);
_logger.LogInformation("Finish");
return File(memoryStream, file_type, file_name);
}
public IActionResult Privacy()
{
return View();
}
[ResponseCache(Duration = 0, Location = ResponseCacheLocation.None, NoStore = true)]
public IActionResult Error()
{
return View(new ErrorViewModel { RequestId = Activity.Current?.Id ?? HttpContext.TraceIdentifier });
}
}
}
- Replace content in
Dockerfile
with the following content:
FROM mcr.microsoft.com/dotnet/aspnet:6.0 AS base
RUN apt-get update && apt-get install -y libgdiplus
RUN sed -i'.bak' 's/$/ contrib/' /etc/apt/sources.list
RUN apt-get update; apt-get install -y ttf-mscorefonts-installer fontconfig
WORKDIR /app
EXPOSE 80
EXPOSE 443
FROM mcr.microsoft.com/dotnet/sdk:6.0 AS build
WORKDIR /src
COPY ["Docker.Linux.Demo01/Docker.Linux.Demo01.csproj", "Docker.Linux.Demo01/"]
RUN dotnet restore "Docker.Linux.Demo01/Docker.Linux.Demo01.csproj"
COPY . .
WORKDIR "/src/Docker.Linux.Demo01"
RUN dotnet build "Docker.Linux.Demo01.csproj" -c Release -o /app/build
FROM build AS publish
RUN dotnet publish "Docker.Linux.Demo01.csproj" -c Release -o /app/publish
FROM base AS final
WORKDIR /app
COPY --from=publish /app/publish .
ENTRYPOINT ["dotnet", "Docker.Linux.Demo01.dll"]
Create sample application for Docker Windows Container
- Launch Visual Studio 2022 and choose ASP.NET Core Web App (Model-View-Controller) template and press Next
- In Configure your new project window set desired project name and location and press Next
- In Additional information window choose .NET 6.0 (Long-term support) and enable Docker support. If needed, you can also set Docker OS to
Windows
. - Press Create
- Choose Tools->Nuget Package Manager->Package Manager Console and install Aspose.PDF for .NET (use command
Install-Package Aspose.PDF
)
Generate PDF document using ASP.NET Core Web App in Windows container
We will use the same code as in the previous example.
- Create an
images
folder in thewwwroot
folder and put the imagelogo.png
. You can use download this image from here - Replace the code in
HomeController.cs
with the snippet above.
FROM mcr.microsoft.com/dotnet/aspnet:6.0 AS base
WORKDIR /app
EXPOSE 80
EXPOSE 443
FROM mcr.microsoft.com/dotnet/sdk:6.0.101-nanoserver-ltsc2022 AS build
WORKDIR /src
COPY ["Docker.Windows.Demo01/Docker.Windows.Demo01.csproj", "Docker.Windows.Demo01/"]
RUN dotnet restore "Docker.Windows.Demo01/Docker.Windows.Demo01.csproj"
COPY . .
WORKDIR "/src/Docker.Windows.Demo01"
RUN dotnet build "Docker.Windows.Demo01.csproj" -c Release -o /app/build -r win-x64 --self-contained true
FROM build AS publish
RUN dotnet publish "Docker.Windows.Demo01.csproj" -c Release -o /app/publish -r win-x64 --self-contained true
FROM base AS final
WORKDIR /app
COPY --from=publish /app/publish .
ENTRYPOINT ["dotnet", "Docker.Windows.Demo01.dll"]