Fix some submodule related problems.

.dockerignore

@@ -2,5 +2,3 @@
 # the build context to the docker image build server
 /build
 
-# in-tree builds
-/deps

scripts/create_source_tarball.sh

@@ -21,6 +21,8 @@ REPO_ROOT="$(dirname "$0")"/..
  TEMPDIR=$(mktemp -d)
  SOLDIR="$TEMPDIR/solidity_$versionstring/"
  mkdir "$SOLDIR"
+ # Ensure that submodules are initialized.
+ git submodule update --init --recursive
  # Store the current source
  git checkout-index -a --prefix="$SOLDIR"
  # shellcheck disable=SC2016

scripts/docker_deploy_manual.sh

@@ -16,7 +16,7 @@ DIR=$(mktemp -d)
 (
 cd "$DIR"
 
-git clone --depth 2 https://github.com/ethereum/solidity.git -b "$branch"
+git clone --recursive --depth 2 https://github.com/ethereum/solidity.git -b "$branch"
 cd solidity
 commithash=$(git rev-parse --short=8 HEAD)
 echo -n "$commithash" > commit_hash.txt