Add docker file for building app image

The official, signed AppImage will be build locally for now for
security of my key, but I still want it to be built in a clean,
controlled environment based off a suitably old Linux distribution for
maximal portability in the AppImage.

2 files changed, 33 insertions, 0 deletions

diff --git a/appimage/Dockerfile b/appimage/Dockerfile
new file mode 100644
index 00000000..d0efc672
--- /dev/null
+++ b/appimage/Dockerfile
@@ -0,0 +1,11 @@
+FROM ubuntu:14.04
+RUN apt-get update && \
+    apt-get -y install screen autoconf git \
+       build-essential zlib1g-dev libjpeg-dev \
+       docbook-xsl fop xsltproc \
+       imagemagick wget fuse && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/*
+COPY entrypoint /entrypoint
+RUN chmod +x /entrypoint
+ENTRYPOINT [ "/entrypoint" ]
diff --git a/appimage/entrypoint b/appimage/entrypoint
new file mode 100755
index 00000000..458a3acf
--- /dev/null
+++ b/appimage/entrypoint
@@ -0,0 +1,22 @@
+#!/bin/bash
+set -e
+if [ $(id -u) = 0 ]; then
+    if [ ! -d /tmp/build/.gnupg ]; then
+        echo "/tmp/build must exist and must contain .gnupg"
+        exit 2
+    fi
+    id=$(stat -c %u /tmp/build)
+    adduser --home /tmp/build --no-create-home --uid $id --disabled-password --gecos build build
+    exec sudo -iu build $0 "$@"
+fi
+
+cd /tmp/build
+if [ ! -d qpdf ]; then
+    if [ "$1" == "" ]; then
+        echo "A repository and optional git clone arguments must be given"
+        exit 2
+    fi
+    git clone "$@" qpdf
+fi
+cd qpdf
+./appimage/build-appimage --sign