add docker support for cdk-mintd

[aki-mizu]

Description

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This PR adds Docker support for cdk-mintd #455

Notes to the reviewers

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This would make deployment of cdk-mintd easier.

ADDED

Dockerfile

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Checklist

• I followed the code style guidelines
• I ran just final-check before committing

[Jeezman]

 Building 539.8s (12/13)                                                                                                                                            docker:orbstack
 => [internal] load build definition from Dockerfile                                                                                                                              0.1s
 => => transferring dockerfile: 1.34kB                                                                                                                                            0.0s
 => [internal] load metadata for docker.io/library/ubuntu:24.04                                                                                                                   2.5s
 => [auth] library/ubuntu:pull token for registry-1.docker.io                                                                                                                     0.0s
 => [internal] load .dockerignore                                                                                                                                                 0.0s
 => => transferring context: 2B                                                                                                                                                   0.0s
 => [1/8] FROM docker.io/library/ubuntu:24.04@sha256:278628f08d4979fb9af9ead44277dbc9c92c2465922310916ad0c46ec9999295                                                             0.0s
 => [internal] load build context                                                                                                                                                81.6s
 => => transferring context: 13.61GB                                                                                                                                             78.7s
 => CACHED [2/8] WORKDIR /usr/src/app                                                                                                                                             0.0s
 => [3/8] RUN apt-get update && apt-get install -y     curl     protobuf-compiler     xz-utils                                                                                   61.1s
 => [4/8] COPY . /usr/src/app                                                                                                                                                   195.8s
 => [5/8] RUN mkdir -m 0755 /nix && chown root /nix                                                                                                                               0.4s
 => [6/8] RUN groupadd -g 30000 nixbld &&     for i in $(seq 1 10); do         useradd -u $((30000 + i)) -g nixbld -G nixbld -m -s /bin/false nixbld$i;     done                  0.4s

Thanks for working on this.
While testing I noticed the size of docker image is quite on the high side, ~ 26GB.

[Jeezman]

2024-11-29T18:13:01.505442Z  WARN cdk_mintd::config: Error reading config file (configuration file "/root/.cdk-mintd/config.toml" not found)
Error: error returned from database: (code: 14) unable to open database file

Got this error while trying to run the image

[Jeezman]

Curious as to why nix is needed

[aki-mizu]

Based on description from https://github.com/aki-mizu/cdk/tree/main/crates/cdk-mintd
In order to build from source, running nix develop is necessary.

[aki-mizu]

2024-11-29T18:13:01.505442Z  WARN cdk_mintd::config: Error reading config file (configuration file "/root/.cdk-mintd/config.toml" not found)
Error: error returned from database: (code: 14) unable to open database file

Got this error while trying to run the image

config.toml file needs to be provided externally.
If you're using docker-compose.yml, you can provide it via volumes like this:
volumes: - ./config.toml:/root/.cdk-mintd/config.toml

[Jeezman]

2024-11-29T18:13:01.505442Z  WARN cdk_mintd::config: Error reading config file (configuration file "/root/.cdk-mintd/config.toml" not found)
Error: error returned from database: (code: 14) unable to open database file

Got this error while trying to run the image

config.toml file needs to be provided externally. If you're using docker-compose.yml, you can provide it via volumes like this: volumes: - ./config.toml:/root/.cdk-mintd/config.toml

Got it. Probably needs a documentation