Merge pull request #407 from rockandska/use_tini_in_docker

[docker] use tini as entrypoint

Dockerfile

@@ -1,6 +1,10 @@
 ARG bashver=latest
 
 FROM bash:${bashver}
+ARG TINI_VERSION=v0.19.0
+
+RUN wget https://github.com/krallin/tini/releases/download/${TINI_VERSION}/tini-static-amd64 -O /tini && \
+    chmod +x /tini
 
 # Install parallel and accept the citation notice (we aren't using this in a
 # context where it make sense to cite GNU Parallel).
@@ -12,4 +16,4 @@ COPY . /opt/bats/
 
 WORKDIR /code/
 
-ENTRYPOINT ["bash", "bats"]
+ENTRYPOINT ["/tini", "--", "bash", "bats"]

docs/CHANGELOG.md

@@ -13,6 +13,8 @@ The format is based on [Keep a Changelog][kac] and this project adheres to
 ### Changed
 
 * added checks and improved documentation for `$BATS_TMPDIR` (#410)
+* the docker container now uses [tini](https://github.com/krallin/tini) as the container entrypoint to
+  improve signal forwarding (#407)
 
 ### Fixed