adding jq as standard for the base image

[gavin-k-lee]

The command renku graph generate gives several .json files. In order to properly parse these, the jq package (ubuntu) is needed.

For many projects this is the only additional piece of software needed to fully use these .json outputs.

As jq is super lightweight anyway, let's add it to the list:

renkulab-docker/docker/py/Dockerfile

Lines 9 to 34 in cc3d398

	# Install additional dependencies and nice-to-have packages
	RUN apt-get update && apt-get install -yq --no-install-recommends \
	build-essential \
	curl && \
	curl -s https://packagecloud.io/install/repositories/github/git-lfs/script.deb.sh | bash && \
	apt-get update && apt-get install -yq --no-install-recommends \
	git \
	git-lfs=2.12.0 \
	gnupg \
	graphviz \
	less \
	libsm6 \
	libxext-dev \
	libxrender1 \
	libyaml-0-2 \
	libyaml-dev \
	lmodern \
	musl-dev \
	nano \
	netcat \
	python-dev \
	unzip \
	vim && \
	apt-get clean && \
	rm -rf /var/lib/apt/lists/* && \
	ln -s /usr/lib/x86_64-linux-musl/libc.so /lib/libc.musl-x86_64.so.1