chore: inheriting proxy env vars from host when building with docker

docker/Dockerfile

@@ -1,12 +1,17 @@
 # global args that are used across multiple stages
 ARG PROFILE
+ARG HTTP_PROXY
 
 # ==========================
 # stage 1: build
 # https://hub.docker.com/_/rust
 # our host is based on bullseye/sid (ubuntu 20)
 # ==========================
 FROM rust:bullseye as builder
+ENV HTTP_PROXY=$HTTP_PROXY
+ENV HTTPS_PROXY=$HTTP_PROXY
+ENV http_proxy=$HTTP_PROXY
+ENV https_proxy=$HTTP_PROXY
 
 WORKDIR /litentry
 COPY . /litentry
@@ -22,6 +27,10 @@ RUN cargo build --locked --profile $PROFILE $BUILD_ARGS
 # stage 2: packaging
 # ==========================
 FROM ubuntu:20.04
+ENV HTTP_PROXY=$HTTP_PROXY
+ENV HTTPS_PROXY=$HTTP_PROXY
+ENV http_proxy=$HTTP_PROXY
+ENV https_proxy=$HTTP_PROXY
 LABEL maintainer="Trust Computing GmbH <info@litentry.com>"
 
 ARG PROFILE
@@ -35,9 +44,9 @@ RUN useradd -m -u 1000 -U -s /bin/sh -d /litentry litentry && \
  mkdir -p /data /litentry/.local/share && \
  chown -R litentry:litentry /data && \
  ln -s /data /litentry/.local/share/litentry-collator && \
-# unclutter and minimize the attack surface
+ # unclutter and minimize the attack surface
  rm -rf /usr/bin /usr/sbin && \
-# check if executable works in this container
+ # check if executable works in this container
  /usr/local/bin/litentry-collator --version
 
 USER litentry

scripts/build-docker.sh

@@ -51,6 +51,9 @@ echo "Building ${GITUSER}/${GITREPO}:${TAG} docker image ..."
 docker build ${NOCACHE_FLAG} --pull -f ./docker/Dockerfile \
  --build-arg PROFILE="$PROFILE" \
  --build-arg BUILD_ARGS="$ARGS" \
+ --build-arg HTTP_PROXY="${HTTP_PROXY//localhost/host.docker.internal}" \
+ --add-host=host.docker.internal:host-gateway \
+ --network host \
  -t ${GITUSER}/${GITREPO}:${TAG} .
 
 # Tag it with latest if no tag parameter was provided