(1/3) Installing snappy (1.1.7-r1)
(2/3) Installing leveldb (1.22-r0)
(3/3) Installing leveldb-dev (1.22-r0)
OK: 199 MiB in 60 packages
fetch http://dl-cdn.alpinelinux.org/alpine/edge/testing/x86_64/APKINDEX.tar.gz
WARNING: Ignoring http://dl-cdn.alpinelinux.org/alpine/edge/testing/x86_64/APKINDEX.tar.gz: UNTRUSTED signature
fetch http://dl-cdn.alpinelinux.org/alpine/v3.11/main/x86_64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/v3.11/community/x86_64/APKINDEX.tar.gz
ERROR: unsatisfiable constraints:
  rocksdb-dev (missing):
    required by: world[rocksdb-dev]
Error: building at STEP "RUN chmod a+x /usr/local/bin/* &&     apk add --no-cache git build-base openssl &&     apk add --no-cache --repository http://dl-cdn.alpinelinux.org/alpine/v3.11/main leveldb-dev &&     apk add --no-cache --repository http://dl-cdn.alpinelinux.org/alpine/edge/testing rocksdb-dev &&     pip install aiohttp pylru plyvel websockets uvloop &&     git clone -b $VERSION https://github.com/spesmilo/electrumx.git &&     cd electrumx &&     python setup.py install &&     apk del git build-base &&     rm -rf /tmp/*": while running runtime: exit status 1