Build Docker container on push

Workflow runs for Build Docker container on push

• Add Electrum protocol version negotiation (#62)

  cancelled:
  Build Docker container on push#90:Commita057c55pushedbyk9ert
  master

  Jun 28, 20261d 0h 0m 1s
  More actions for workflow run 90

• fix: constrain CI dependencies (#64)

  cancelled:
  Build Docker container on push#89:Commite75ed88pushedbyk9ert
  master

  Jun 28, 20261d 0h 0m 1s
  More actions for workflow run 89

• Add GitHub Actions workflow for PyPI publishing on tag (#61)

  cancelled:
  Build Docker container on push#88:Commit897629fpushedbyk9ert
  master

  Feb 1, 20261d 0h 0m 1s
  More actions for workflow run 88

• Pin sqlalchemy<2.0 to fix Flask-SQLAlchemy 2.5.1 compatibility (#60)

  cancelled:
  Build Docker container on push#87:Commit407f694pushedbyk9ert
  master

  Feb 1, 20261d 0h 0m 4s
  More actions for workflow run 87