$ docker run -it lukechilds/ephemeral-electrum "much bottom such hurt hunt welcome cushion erosion pulse admit name deer"
HD wallets can be loaded as Electrum or BIP39 mnemonic seed phrases as well as extend public and private keys.
Single addresses can be loaded using the Electrum address-type:wif format.
The Docker container automatically creates an Electrum wallet file importing your seed/key, then starts the text based interface for Electrum.
Once you quit the process everything is destroyed. It's all isolated to the container, nothing is persisted to disk.
It's pretty handy for just quickly checking the state of a wallet/address or monitoring test wallets while developing.
Hopefully some people find it useful.