Upgrade to Debian 10 to get Debian's diffoscope and apktool packages.

Dockerfile

-FROM debian:stretch
+FROM debian:buster
 
 ENV LANG=C.UTF-8
 ENV DEBIAN_FRONTEND=noninteractive

README.md

@@ -90,6 +90,8 @@ You can find a list of tags in Briar's
 The `SYS_ADMIN` capability and the `fuse` device are required,
 so the container can build the app inside a `disorderfs` which shuffles the filesystem.
 
+If the build fails with `fuse: mount failed: Permission denied`, you may need to add the argument `--security-opt apparmor:unconfined` to the Docker command.
+
 ## Historical Changes
 
 * Before version `1.1.7`, Briar needed a deterministic files system

install-dependencies-verification.sh

@@ -3,19 +3,5 @@ set -e
 set -x
 
 apt-get install -y --no-install-recommends \
-	enjarify \
-	python3-pip python3-setuptools python3-wheel \
-	python3-libarchive-c \
-	libmagic1
-
-# Install latest diffoscope (version in Debian stable is outdated)
-pip3 install diffoscope
-
-# Install latest apktool for verification debugging
-wget --no-verbose https://bitbucket.org/iBotPeaches/apktool/downloads/apktool_2.3.3.jar -O /opt/apktool.jar
-cat >/usr/local/bin/apktool <<EOF
-#!/usr/bin/env bash
-java -jar /opt/apktool.jar \$@
-EOF
-chmod +x /usr/local/bin/apktool
-mkdir -p /root/.local/share/apktool/framework
+	diffoscope \
+	apktool
\ No newline at end of file

install-dependencies.sh

@@ -4,7 +4,7 @@ set -x
 
 apt-get install -y --no-install-recommends \
 	git \
-	default-jdk-headless \
+	openjdk-8-jdk-headless \
 	fuse \
 	disorderfs \
 	unzip \

install.sh

@@ -2,6 +2,9 @@
 set -e
 set -x
 
+# allow OpenJDK 8 to be installed from the oldstable repo
+echo 'deb http://deb.debian.org/debian/ stretch main' >> /etc/apt/sources.list
+
 # update package sources
 apt-get update
 apt-get -y upgrade