Updated to point to apktool (not apksigner).
Although are these separate tools?
OK, apktool running after some faff with Java, permissions and paths!
Next error:
APKSIGNER_PATH=/usr/bin/local/apksigner zapstore publish btcmap
Publishing btcmap android app...
✔ Fetched metadata from Github
✔ Fetched package: https://github.com/teambtcmap/btcmap-android/releases/download/v0.9.0/btcmap-0.9.0.apk
⠴ Parsing APK...
ERROR ShellException(sh -c "/usr/bin/local/apksigner verify --print-certs /tmp/1849c635c622e107efb01d0b78e09a0bef547850f10f74073b866bbb828256c1.apk | grep SHA-256", exitCode 1, workingDirectory: /home/nathan-day/Code/zapstore)
Discussion
Installing Android Studio ...
BTW, the Intern (aka nostr:nprofile1qyv8wumn8ghj7enfd36x2u3wdehhxarj9emkjmn99uqsuamnwvaz7tmwdaejumr0dshszythwden5te0dehhxarj9emkjmn99uq32amnwvaz7tmjv4kxz7fwv3sk6atn9e5k7tcpzamhxue69uhhyetvv9ujuurjd9kkzmpwdejhgtcpr9mhxue69uhhyetvv9ujuumwdae8gtnnda3kjctv9uqzp384u7n44r8rdq74988lqcmggww998jjg0rtzfd6dpufrxy9djk82quhat ) is doing this and he is highly regarded.