Add license compliance to release archives

scripts/update-third-party-licenses.sh

@@ -0,0 +1,57 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+repo_root="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+temp_dir="$(mktemp -d)"
+trap 'rm -rf "$temp_dir"' EXIT
+
+go_license="$(go env GOROOT)/LICENSE"
+if [ ! -f "$go_license" ] && [ -f /usr/share/licenses/go/LICENSE ]; then
+  go_license=/usr/share/licenses/go/LICENSE
+fi
+if [ ! -f "$go_license" ]; then
+  echo "Go license file was not found" >&2
+  exit 1
+fi
+
+cat >"$temp_dir/template.txt" <<'EOF'
+{{ range . }}================================================================================
+Package: {{ .Name }}
+License: {{ .LicenseName }}
+Source: {{ .LicenseURL }}
+
+{{ .LicenseText }}
+{{ end }}
+EOF
+
+{
+  cat <<'EOF'
+THIRD-PARTY SOFTWARE NOTICES
+
+This file contains license notices for third-party software included in the distributed binary.
+
+================================================================================
+Package: Go standard library
+License: BSD-3-Clause
+Source: https://go.dev/LICENSE
+
+EOF
+  cat "$go_license"
+  printf '\n'
+  cd "$repo_root"
+  go run github.com/google/go-licenses/v2@v2.0.1 report ./cmd/dataxl \
+    --ignore=git.rumginger.org/agent/dataxl \
+    --template="$temp_dir/template.txt"
+} >"$temp_dir/THIRD_PARTY_LICENSES.txt"
+
+awk '
+  { lines[NR] = $0 }
+  $0 !~ /^[[:space:]]*$/ { last_content_line = NR }
+  END {
+    for (line_number = 1; line_number <= last_content_line; line_number++) {
+      print lines[line_number]
+    }
+  }
+' "$temp_dir/THIRD_PARTY_LICENSES.txt" >"$temp_dir/THIRD_PARTY_LICENSES.normalized.txt"
+
+mv "$temp_dir/THIRD_PARTY_LICENSES.normalized.txt" "$repo_root/THIRD_PARTY_LICENSES.txt"