Step fails when building image

[naadev]

Hello,

It seems in my environment, the step is being broken when building the image.

Sending build context to Docker daemon 54.27kB
Step 1/14 : FROM mcr.microsoft.com/dotnet/core/sdk:3.1 AS build
---> 397f9fc13f1c
Step 2/14 : WORKDIR /app
---> Using cache
---> 6f2a8c667507
Step 3/14 : LABEL "com.github.actions.name"="Microsoft Teams (Generic)"
---> Using cache
---> 61b1990b664c
Step 4/14 : LABEL "com.github.actions.description"="Send a message to the designated channel in Microsoft Teams"
---> Using cache
---> b8eda88a688e
Step 5/14 : LABEL "com.github.actions.icon"="message-square"
---> Using cache
---> 2ef12e63e1f5
Step 6/14 : LABEL "com.github.actions.color"="purple"
---> Using cache
---> 36e124fc59c0
Step 7/14 : LABEL "repository"="http://github.com/aliencube/microsoft-teams-actions"
---> Using cache
---> f893377a8307
Step 8/14 : LABEL "homepage"="http://github.com/aliencube"
---> Using cache
---> ec448fbbf5a0
Step 9/14 : LABEL "maintainer"="Justin Yoo no-reply@aliencube.com"
---> Using cache
---> 00bb1756ad7b
Step 10/14 : COPY *.sln .
---> Using cache
---> 3e091590c313
Step 11/14 : COPY src/ ./src/
---> Using cache
---> 2010d6bb40c1
Step 12/14 : ADD entrypoint.sh /entrypoint.sh
---> Using cache
---> 951cda586044
Step 13/14 : RUN chmod +x entrypoint.sh
---> Running in 7c225bb908ad
The command '/bin/sh -c chmod +x entrypoint.sh' returned a non-zero code: 132

I'm running the step on a self-hosted runner with following version of docker installed on it:
Docker version 20.10.2, build 20.10.2-0ubuntu1~18.04.2

Any clue on what could be missing?