Cómo actualizar mi imagen en docker

Para nodos de bitcoin corriendo en contenedores de docker

Esta vez, joven, señor, señorita, les venimos ofreciendo esto que es el paso a paso pues. Que agarro y que le digo, para correr la versión, la imagen de bitcoin en docker, más actualizada.

🛑 Step 1: Stop the node

This stops the container but preserves data (assuming you're using a persistent volume):

docker stop bitcoin-mainnet

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🔼 Step 2: Pull the latest Bitcoin Core image

This downloads the latest bitcoin/bitcoin image (even if tagged as latest, Docker won't auto-update unless you pull it):

docker pull bitcoin/bitcoin:latest

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🧼 Step 3: Remove the old container

The container is just a wrapper — this won’t delete your blockchain data if you're using a volume (double-check your docker-compose.yml to confirm this):

docker rm bitcoin-mainnet

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🚀 Step 4: Restart the node with the new image

If you use docker-compose.yml, simply run:

docker-compose up -d

Or if you’re using docker run, re-run it with your original settings and volume mounts, something like:

bashCopyEditdocker run -d \
  --name=bitcoin-mainnet \
  -p 8332:8332 \
  -p 8333:8333 \
  -v /your/host/bitcoin-data:/bitcoin/.bitcoin \
  --restart unless-stopped \
  bitcoin/bitcoin:latest \
  bitcoind -printtoconsole -server

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✅ Step 5: Confirm it’s running and synced

Check logs:

bashCopyEditdocker logs -f bitcoin-mainnet

Or get block height:

bashCopyEditdocker exec bitcoin-mainnet bitcoin-cli getblockcount

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