Not able to Import private gpg key

[yvasyliev]

Description:
I'm using GitHub Actions to publish artifacts on Maven Central.
One of the required steps is to provide gpg signature.

actions/setup-java@v3 action fails on Importing private gpg key step.
The error is The process '/usr/bin/gpg' failed with exit code 2.

I provide gpg-private-key as following:

-----BEGIN PGP PRIVATE KEY BLOCK-----

{SECRET_KEY}
-----END PGP PRIVATE KEY BLOCK-----

It used to work a few months ago....
Could you please help me to understand what is wrong?

Task version:
actions/setup-java@v3

Platform:

• Ubuntu
• macOS
• Windows

Runner type:

• Hosted
• Self-hosted

Repro steps:

• Repository
• Job
• Job Run

Expected behavior:
Set up JDK 8 step should pass.

Actual behavior:
Set up JDK 8 step fails.
Log:

Run actions/setup-java@v3
  with:
    java-version: 8
    distribution: adopt
    cache: maven
    server-id: ossrh
    server-username: MAVEN_USERNAME
    server-password: MAVEN_PASSWORD
    gpg-private-key: ***
    gpg-passphrase: MAVEN_GPG_PASSPHRASE
    java-package: jdk
    check-latest: false
    overwrite-settings: true
    job-status: success
    token: ***
  env:
    TAG: v2.1.2
    JAR_NAME: deezer-api-2.1.2-jar-with-dependencies.jar
    JAR_PATH: target/deezer-api-2.1.2-jar-with-dependencies.jar
Installed distributions
  Trying to resolve the latest version from remote
  Resolved latest version as 8.0.382+5
  Trying to download...
  Downloading Java 8.0.382+5 (Adopt-Hotspot) from https://github.com/adoptium/temurin8-binaries/releases/download/jdk8u382-b05/OpenJDK8U-jdk_x64_linux_hotspot_8u382b05.tar.gz ...
  Extracting Java archive...
  /usr/bin/tar xz --warning=no-unknown-keyword -C /home/runner/work/_temp/ca7fd9c3-7e35-4b79-9fea-a6828e676ef9 -f /home/runner/work/_temp/d87a81ee-9087-49dd-85f4-1b9abfba2fde
  Java 8.0.382+5 was downloaded
  Setting Java 8.0.382+5 as the default
  Creating toolchains.xml for JDK version 8 from adopt
  Writing to /home/runner/.m2/toolchains.xml
  
  Java configuration:
    Distribution: adopt
    Version: 8.0.382+5
    Path: /opt/hostedtoolcache/Java_Adopt_jdk/8.0.382-5/x64
  
Creating settings.xml with server-id: ossrh
Writing to /home/runner/.m2/settings.xml
Importing private gpg key
Error: The process '/usr/bin/gpg' failed with exit code 2

[yvasyliev]

Nevermind, I just found that gpg-private-key must include tailing new line (\n).
So it should be:

-----BEGIN PGP PRIVATE KEY BLOCK-----

{SECRET_KEY}
-----END PGP PRIVATE KEY BLOCK-----

instead of:

-----BEGIN PGP PRIVATE KEY BLOCK-----

{SECRET_KEY}
-----END PGP PRIVATE KEY BLOCK-----