Preparation for http proxy caching (#8281)

* always use http for apt repos

* pass possible proxy arguments to docker

* populate lower-case env variables with upper-case ones if not set otherwise

lib/functions/host/docker.sh

@@ -409,6 +409,13 @@ function docker_cli_prepare_launch() {
 		"--env" "GITHUB_SHA=${GITHUB_SHA}"
 		"--env" "GITHUB_WORKFLOW=${GITHUB_WORKFLOW}"
 		"--env" "GITHUB_WORKSPACE=${GITHUB_WORKSPACE}"
+
+		# Pass proxy args
+ 		"--env" "http_proxy=${http_proxy:-${HTTP_PROXY}}"
+ 		"--env" "https_proxy=${https_proxy:-${HTTPS_PROXY}}"
+ 		"--env" "HTTP_PROXY=${HTTP_PROXY}"
+		"--env" "HTTPS_PROXY=${HTTPS_PROXY}"
+		"--env" "APT_PROXY_ADDR=${APT_PROXY_ADDR}"
 	)
 
 	# This env var is used super early (in entrypoint.sh), so set it as an env to current value.

lib/functions/rootfs/distro-specific.sh

@@ -196,7 +196,7 @@ function create_sources_list_and_deploy_repo_key() {
 	fi
 	cat <<- EOF > "${basedir}"/etc/apt/sources.list.d/armbian.sources
 	Types: deb
-	URIs: https://${armbian_mirror}
+	URIs: http://${armbian_mirror}
 	Suites: $RELEASE
 	Components: ${components[*]}
 	Signed-By: ${APT_SIGNING_KEY_FILE}