Add latest tag for Docker image.

[Krout0n]

Problem

When $ docker pull solanalabs/solana is executed, no image is pulled because latest tag is not specified now.

Proposed Solution

Add latest when new version is released, if this is a good first issue, I wanna contribute.

[t-nelson]

Definitely a good first issue. Patches welcome! 🙂

[Krout0n]

Should the latest be updated only at Mainnet release? BTW I'm reading sdk/docker-solana/build.sh now but feeling that there's more.

[mvines]

Right now we have three Docker tags: edge, beta and stable. These correspond to the names of our release channels: https://github.com/solana-labs/solana/blob/master/RELEASE.md#channels

It's not clear to me what a latest would mean. It could be any or all of these three channels depending on what the user is looking for. This is the main reason why we don't have a latest.

The solana Docker image is mostly for internal CI usage anyway. It's not a public artifact that we advertise for ecosystem use

[vintageplayer]

As per convention, the latest points to the latest stable image (safest IMO)

docker pull solanalabs/solana right now throws:

Error response from daemon: manifest for solanalabs/solana:latest not found: manifest unknown: manifest unknown

It's better to get the safest ci to get started. Since the overview page is empty, I ended up cloning the repo and building manually, till I realized other tags exist.

[xiangzhu70]

The "https://hub.docker.com/r/solanalabs/solana" page shows Docker Pull Command as "docker pull solanalabs/solana", which assumes the existence of solana:latest tag, hence the error.

The correct pull command should be "docker pull solanalabs/solana:<correct_tag>", such as "docker pull solanalabs/solana:stable"

[LukasDeco]

Is this the kind of script we would add the tag to? https://github.com/solana-labs/solana/blob/master/sdk/docker-solana/build.sh Seems like there are a few of these scripts. Or am I looking in the wrong place.