Add rlwrap to the Docker CMD

rlwrap adds command history and command line editing to the GDPR API
tester command line.

Author: mikkokeskinen

Dockerfile

@@ -4,6 +4,10 @@ LABEL org.opencontainers.image.source=https://github.com/City-of-Helsinki/profil
 LABEL org.opencontainers.image.description="Helsinki Profile GDPR API Tester"
 LABEL org.opencontainers.image.licenses=MIT
 
+RUN set -eux; \
+  apt-get update; \
+  apt-get install -y --no-install-recommends rlwrap
+
 WORKDIR /app
 
 COPY requirements.txt requirements.txt
@@ -14,4 +18,6 @@ COPY /gdpr_api_tester /app/gdpr_api_tester
 
 EXPOSE 8888
 
-CMD ["python", "-m", "gdpr_api_tester"]
+# The sleep is needed to make rlwrap work. Without the sleep rlwrap can't determine the terminal dimensions.
+# See this issue for more information: https://github.com/moby/moby/issues/28009
+CMD sleep 0.1; rlwrap python -m gdpr_api_tester