Remove an unused variable in repack.sh
Add "go get" of sqlite3 temporarily (until we get a package)
Update rules to use upstream build script (including a patch for DOCKER_GITCOMMIT, which made it into 0.7.0)
Have repack.sh add the +dfsg1 suffix to our tarball, since it's the one making us DFSG-compatible
Add Dockerfile for easy building of the package on non-Debian platforms