solana: add docker for generating governance instructions

[kcsongor]

Example usage:

1. cd solana
2. Save this file into solana/claimOwnership.ts

import { NTT } from "./ts/sdk";
import * as anchor from "@coral-xyz/anchor";
import { OWNER, serializeInstruction } from "./ts/sdk/utils";

(async () => {
    const connection = new anchor.web3.Connection("https://localhost")
    const ntt = new NTT(connection, {
        nttId: "INSERT_NTT_ADDRESS",
        wormholeId: "INSERT_WORMHOLE_ADDRESS",
    })
    const ix = await ntt.createClaimOwnershipInstruction({
        newOwner: OWNER
    })
    console.log(serializeInstruction(ix).toString("hex"))
})()

3. docker build --target governance --tag governance .
4. docker run -i --rm governance < claimOwnership.ts

The base branch was changed.