docker: install packages from requirements.txt in VS Code devcontainer

Our VS Code devcontainer is based on our buildenv container, so we directly modify the latter.

.gitignore

@@ -23,6 +23,7 @@ sims/net/menshen/obj_dir
 sims/net/tofino/tofino
 doc/doxygen
 doc/_build
+docker/requirements.txt
 images/farmem/Module.symvers
 images/farmem/modules.order
 images/farmem/farmem.mod*

docker/Dockerfile.buildenv

@@ -29,6 +29,7 @@ RUN apt-get update \
 	protobuf-compiler \
 	python-is-python3 \
 	python3-dev \
+	python3-pip \
 	python3-sphinx \
 	python3-sphinx-rtd-theme \
 	rsync \
@@ -38,6 +39,8 @@ RUN apt-get update \
 	nano \
 	vim \
  && rm -rf /var/lib/apt/lists/*
+COPY requirements.txt /tmp/requirements.txt
+RUN pip install -r /tmp/requirements.txt
 COPY verilator.patch /tmp/
 RUN cd /tmp \
  && git clone -b v4.010 https://github.com/verilator/verilator \

docker/rules.mk

@@ -30,7 +30,12 @@ DOCKER_IMAGES := simbricks/simbricks-build simbricks/simbricks-base \
   simbricks/simbricks simbricks/simbricks-runenv simbricks/simbricks-min \
   simbricks/simbricks-dist-worker simbricks/simbricks-gem5opt
 
-docker-images:
+REQUIREMENTS_TXT := $(d)requirements.txt
+
+$(REQUIREMENTS_TXT):
+	cp requirements.txt $@
+
+docker-images: $(REQUIREMENTS_TXT)
 	docker build -t \
 		$(DOCKER_REGISTRY)simbricks/simbricks-build$(DOCKER_TAG) \
 		--build-arg="REGISTRY=$(DOCKER_REGISTRY)" \
@@ -89,4 +94,6 @@ docker-push:
 		docker image inspect $$i >/dev/null && docker push $$i ; \
 		done
 
+CLEAN := $(REQUIREMENTS_TXT)
+
 include mk/subdir_post.mk