Adding script to build a docker container with debug info.

Signed-off-by: Tim 'mithro' Ansell <tansell@google.com>

open_pdks/build-debug-local.sh

diff --git a/open_pdks/build-debug-local.sh b/open_pdks/build-debug-local.sh
new file mode 100755
index 0000000..5986edb
--- /dev/null
+++ b/open_pdks/build-debug-local.sh
@@ -0,0 +1,84 @@
+#!/usr/bin/env bash
+# Copyright 2021 SkyWater PDK Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+
+CALLED=$_
+[[ "${BASH_SOURCE[0]}" != "${0}" ]] && SOURCED=1 || SOURCED=0
+
+SCRIPT_SRC="$(realpath ${BASH_SOURCE[0]})"
+SCRIPT_DIR="$(dirname "${SCRIPT_SRC}")"
+
+SCRIPT_DIR_REL="$(realpath $SCRIPT_DIR --relative-to=$PWD)"
+
+TOP_DIR=$PWD
+export TOP_DIR
+
+set -xe
+
+# Cleanup any existing docker build
+docker stop --time 0 builder || true
+docker rm builder || true
+
+# Start the docker container to do the build inside.
+docker run -dt \
+  --mount type=bind,source="$(pwd)",target=/host \
+  --name builder \
+  debian || docker start builder
+
+docker ps
+
+DOCKER_CMD="docker exec builder"
+
+$DOCKER_CMD ls /host
+
+cat > debug.list <<EOF
+deb http://deb.debian.org/debian-debug/ bullseye-debug main
+deb http://deb.debian.org/debian-debug/ bullseye-proposed-updates-debug main
+EOF
+
+$DOCKER_CMD mv /host/debug.list /etc/apt/sources.list.d/
+$DOCKER_CMD chown root:root /etc/apt/sources.list.d/debug.list
+
+$DOCKER_CMD apt-get update -qq
+
+$DOCKER_CMD apt-cache search tcsh dbg
+
+$DOCKER_CMD apt-get -y install --no-install-recommends \
+    ca-certificates \
+    curl \
+    wget \
+    python3 \
+
+$DOCKER_CMD apt-get -y install --no-install-recommends \
+    build-essential \
+    gdb \
+    git \
+    make \
+
+$DOCKER_CMD apt-get -y install --no-install-recommends \
+    csh \
+    libcairo2-dbgsym \
+    libglu1-mesa-dbgsym \
+    libncurses6-dbgsym \
+    libpython3-all-dbg \
+    libx11-6-dbgsym \
+    m4 \
+    python3.9-dbg \
+    tk8.6-dbgsym \
+    tcl8.6-dbgsym \
+    tcl-expect-dbgsym \
+    tcsh-dbgsym \
+    libc6-dbg \