SONAR-14822 Provide a GitHub Action to scan a project

Dockerfile

@@ -0,0 +1,20 @@
+FROM sonarsource/sonar-scanner-cli:4.6
+
+LABEL version="1.0.0" \
+      repository="https://github.com/sonarsource/sonarqube-scan-action" \
+      homepage="https://github.com/sonarsource/sonarqube-scan-action" \
+      maintainer="SonarSource" \
+      com.github.actions.name="SonarQube Scan" \
+      com.github.actions.description="Scan your code with SonarQube to detect Bugs, Vulnerabilities and Code Smells in more than 27 programming languages!" \
+      com.github.actions.icon="check" \
+      com.github.actions.color="green"
+
+# Set up local envs in order to allow for special chars (non-asci) in filenames.
+ENV LC_ALL="C.UTF-8"
+
+# https://help.github.com/en/actions/creating-actions/dockerfile-support-for-github-actions#user
+USER root
+
+COPY entrypoint.sh /entrypoint.sh
+RUN chmod +x /entrypoint.sh
+ENTRYPOINT ["/entrypoint.sh"]