From fe09c477171e3fc99508ded4515e2090a3b2adbb Mon Sep 17 00:00:00 2001
From: Knut Ahlers <knut@ahlers.me>
Date: Thu, 4 Apr 2019 18:09:42 +0200
Subject: [PATCH] Add key retrieval

Signed-off-by: Knut Ahlers <knut@ahlers.me>
---
 Dockerfile |  1 +
 getkeys.sh | 16 ++++++++++++++++
 run.sh     |  3 +++
 3 files changed, 20 insertions(+)
 create mode 100755 getkeys.sh

diff --git a/Dockerfile b/Dockerfile
index 68b2d47..a7c90a5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -18,5 +18,6 @@ VOLUME ["/src", "/repo", "/config"]
 WORKDIR /src
 
 COPY run.sh /usr/local/bin/
+COPY getkeys.sh /usr/local/bin/
 
 ENTRYPOINT ["/usr/local/bin/run.sh"]
diff --git a/getkeys.sh b/getkeys.sh
new file mode 100755
index 0000000..a8b4c35
--- /dev/null
+++ b/getkeys.sh
@@ -0,0 +1,16 @@
+#!/bin/bash
+set -euo pipefail
+
+[ -f "PKGBUILD" ] || {
+	echo "No PKGBUILD file found"
+	exit 1
+}
+
+source PKGBUILD
+
+[ -n "${validgpgkeys:-}" ] || {
+	echo "No 'validgpgkeys' directive found, nothing to do"
+	exit 0
+}
+
+exec gpg --recv-keys "${validgpgkeys[@]}"
diff --git a/run.sh b/run.sh
index 620a3d2..e2e4f3c 100755
--- a/run.sh
+++ b/run.sh
@@ -30,6 +30,9 @@ fi
 # Update pacman index
 pacman -Sy
 
+# Retrieve GPG keys if required
+gosu builder getkeys.sh
+
 # Execute the build itself
 gosu builder makepkg ${MAKEPKG_OPTS[@]}