creating pdf with .net6 in aws lambda

[IrshadMar]

I am running the pdf conversion code in aws lambda function using .net6 and aws linux 2.
In the main page documentation, the following instruction is there for creating a docker image.

_Insert the below lines before the WORKDIR /app command

RUN apt update
RUN apt install -y libgdiplus
RUN ln -s /usr/lib/libgdiplus.so /lib/x86_64-linux-gnu/libgdiplus.so
RUN apt-get install -y --no-install-recommends zlib1g fontconfig libfreetype6 libx11-6 libxext6 libxrender1 wget gdebi
RUN wget https://github.com/wkhtmltopdf/wkhtmltopdf/releases/download/0.12.5/wkhtmltox_0.12.5-1.stretch_amd64.deb
RUN gdebi --n wkhtmltox_0.12.5-1.stretch_amd64.deb
RUN apt install libssl1.1
RUN ln -s /usr/local/lib/libwkhtmltox.so /usr/lib/libwkhtmltox.so_

Please help me to resolve this issue while deploying it to aws lambda using .zip files.
Or what will be the corresponding commands to use when creating a docker image with amazon linux2.
Or please instruct me what base image can be used to make it work.

[stysiok]

Have you been able to sort that issue yourself? I'm trying to also set it up on AWS Lambda, but failing miserably. No matter what dependencies I install I always get an exception back that some of the dependencies are missing.

[stysiok]

@IrshadMar I think I managed to set it up by adding following lines to my dockerfile

FROM public.ecr.aws/lambda/dotnet:6

RUN yum install -y libXext \
    libXrender

RUN curl -SL "https://github.com/rdvojmoc/DinkToPdf/raw/v1.0.8/v0.12.4/64%20bit/libwkhtmltox.so" --output ./libwkhtmltox.so

To use zip deployments you would need to modify your lambda to install libXext and libXrender and add the lib to /var/task or where do you keep your dlls.

It looks like the code after publish is unable to load libwkhtmltox.so located in runtimes folder.

[IrshadMar]

I was unsuccessful in solving this issue even after trying the docker solution mentioned by @stysiok above.

While running the docker build I am getting the below error at yum install

Used the below command.
RUN yum install -y libXext \ libXrender

After deployment I am still getting ---> System.NotSupportedException: Unable to load native library. The platform may be missing native dependencies (libjpeg62, etc). Or the current platform is not supported.

[IrshadMar]

This solved it for me
https://www.appsloveworld.com/docker/100/58/unable-to-load-shared-library-libgdiplus-or-one-of-its-dependencies-while-runni

Docker file:
FROM public.ecr.aws/lambda/dotnet:6
WORKDIR /var/task

RUN yum clean all && yum update -y
RUN yum install -y amazon-linux-extras
RUN amazon-linux-extras install epel -y
RUN yum install -y libgdiplus

COPY publish/* /var/task/

CMD [ "" ]

Note: You may have to use the libwkhtmltox.so file using the curl command mentioned by @stysiok in the comment above.
Thanks a lot!