add itai-nelken's box86 and gnupg dependency

Dockerfile

@@ -19,6 +19,7 @@ RUN set -x \
 	&& apt-get update \
  	&& apt-get install -y --no-install-recommends --no-install-suggests \
   		wget \
+		gnupg \
 		libc6:armhf \
 		libstdc++6:armhf \
 		ca-certificates=20210119 \
@@ -27,8 +28,11 @@ RUN set -x \
 		locales=2.31-13+deb11u7 \
     && wget https://ryanfortner.github.io/box64-debs/box64.list -O /etc/apt/sources.list.d/box64.list \
     && (wget -qO- https://ryanfortner.github.io/box64-debs/KEY.gpg | gpg --dearmor -o /etc/apt/trusted.gpg.d/box64-debs-archive-keyring.gpg) \
+	&& wget https://itai-nelken.github.io/weekly-box86-debs/debian/box86.list -O /etc/apt/sources.list.d/box86.list \
+	&& (wget -qO- https://itai-nelken.github.io/weekly-box86-debs/debian/KEY.gpg | gpg --dearmor -o /etc/apt/trusted.gpg.d/box86-debs-archive-keyring.gpg) \
 	&& apt-get install -y --no-install-recommends --no-install-suggests \
         box64-arm64 \
+		box86 \
 	&& sed -i -e 's/# en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/' /etc/locale.gen \
 	&& dpkg-reconfigure --frontend=noninteractive locales \
 	# Create unprivileged user