Docker build based on stock Fedora 29

$ docker version
Client:
 Version:           18.09.3
 API version:       1.39
 Go version:        go1.10.8
 Git commit:        774a1f4
 Built:             Thu Feb 28 06:34:10 2019
 OS/Arch:           linux/amd64
 Experimental:      false

Server: Docker Engine - Community
 Engine:
  Version:          18.09.3
  API version:      1.39 (minimum version 1.12)
  Go version:       go1.10.8
  Git commit:       774a1f4
  Built:            Thu Feb 28 06:02:24 2019
  OS/Arch:          linux/amd64
  Experimental:     false

Package       Version
------------- --------
aiohttp       3.5.4
aiorpcX       0.15.0
async-timeout 3.0.1
attrs         19.1.0
chardet       3.0.4
electrumX     1.11.0
gpg           1.12.0
idna          2.8
iniparse      0.4
multidict     4.5.2
pip           18.1
plyvel        1.0.5
pylru         1.2.0
rpm           4.14.2.1
setuptools    40.4.3
six           1.11.0
uvloop        0.12.2
yarl          1.3.0