Running TagUI RPA as a Lambda Function

Question

I am trying to run a simple TagUI flow as a Lambda function using container images. I have made a Dockerfile using the bootstrap and function.sh from this tutorial:

FROM amazon/aws-lambda-provided:al2

RUN yum install -y wget nano php java-1.8.0-openjdk unzip procps

RUN curl https://intoli.com/install-google-chrome.sh | bash

RUN wget https://github.com/kelaberetiv/TagUI/releases/download/v6.46.0/TagUI_Linux.zip \
    && unzip TagUI_Linux.zip \
    && rm TagUI_Linux.zip \
    && ln -sf /var/task/tagui/src/tagui /usr/local/bin/tagui \
    && tagui update 

RUN sed -i 's/no_sandbox_switch=""/no_sandbox_switch="--no-sandbox"/' /var/task/tagui/src/tagui

ADD tr.tag /var/task/tagui/src/tr.tag

WORKDIR /var/runtime/
COPY bootstrap bootstrap
RUN chmod 755 bootstrap

WORKDIR /var/task/
COPY function.sh function.sh
RUN chmod 755 function.sh

CMD [ "function.sh.handler" ]

My function.sh:

function handler () {
   cp -r /var/task/tagui/src/* /tmp;
   chmod 755 /tmp/tagui;
   OUTPUT=$(/tmp/tagui /tmp/tr.tag -h);
   echo "${OUTPUT}";
}

Notes:

• the sed line is required to get TagUI running in docker images.
• tr.tag is just a simple flow to do a password reset on a webapp so I can confirm the container has run.
• everything has to be run in /tmp as that is the only folder Lambda can write to in the container and TagUI creates a load of temporary files during execution.

When I run as a Lambda I get the error:

./tmp/tagui/src/tagui: line 398: 56 Trace/breakpoint trap (core dumped) $chrome_command --user-data-dir="$TAGUI_DIR/chrome/tagui_user_profile" $chrome_switches $window_size $headless_switch $no_sandbox_switch > /dev/null 2>&1

When I run the container from Docker it runs perfectly. I have tried increasing both the memory and timeout of the function.

The end goal I am trying to achieve is to have a Lambda function triggered by an API gateway that can receive a TagUI RPA flow and run it.