Added dockerfile to build fsarchiver

docker/Dockerfile-archlinux

@@ -0,0 +1,6 @@
+FROM archlinux:latest
+RUN mkdir -p /workspace
+RUN pacman -Syyu --noconfirm autoconf automake gcc git make patch pkgconf && rm -rf /var/cache/pacman/pkg/*
+RUN pacman -Syyu --noconfirm bzip2 e2fsprogs lzo xz libgcrypt zlib lz4 zstd && rm -rf /var/cache/pacman/pkg/*
+CMD ["/usr/bin/bash"]
+WORKDIR /workspace

docker/build-docker-image.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+
+if [ -z ${DOCKER_CMD+x} ]; then
+    # $DOCKER_CMD is not set -> use the default
+    DOCKER_CMD=docker
+fi
+
+# Determine the path to the git repository
+fullpath="$(realpath $0)"
+curdir="$(dirname ${fullpath})"
+repodir="$(realpath ${curdir}/..)"
+echo "fullpath=${fullpath}"
+echo "repodir=${repodir}"
+
+# Build the docker image
+dockerimg="fsarchiver-builder:latest"
+"$DOCKER_CMD" build -t ${dockerimg} -f ${repodir}/docker/Dockerfile-archlinux ${repodir}/docker

docker/build-fsarchiver.sh

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+#!/usr/bin/env bash
+
+if [ -z ${DOCKER_CMD+x} ]; then
+    # $DOCKER_CMD is not set -> use the default
+    DOCKER_CMD=docker
+fi
+
+# Make sure the docker image exists
+dockerimg="fsarchiver-builder:latest"
+if ! "$DOCKER_CMD" inspect ${dockerimg} >/dev/null 2>/dev/null ; then
+    echo "ERROR: You must build the following docker image before you run this script: ${dockerimg}"
+    exit 1
+fi
+
+# Determine the path to the git repository
+fullpath="$(realpath $0)"
+curdir="$(dirname ${fullpath})"
+repodir="$(realpath ${curdir}/..)"
+echo "curdir=${curdir}"
+echo "repodir=${repodir}"
+
+# Build fsarchiver in docker
+docker run --rm --user 1000:1000 -it \
+    --volume=${repodir}:/workspace \
+    ${dockerimg} setarch x86_64 -- bash -c "make distclean ; ./autogen.sh && ./configure && make && make dist"
+res=$?
+if [ ${res} -ne 0 ]
+then
+    echo "ERROR: Failed to build fsarchiver"
+    exit 1
+fi