Use ubuntu for docker runtime image #161
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The Alpine base image causes systematic crash for some libsecp256k1 operations. JNI-related issues related to the use of `musl` instead of `glibc` are well documented. The issue is fixed by switching alpine for ubuntu, which is `glibc`-based. Note that it makes the final image significantly larger (502MB vs 313MB). The goal of using the JVM on docker was for compatibility with ARM. Once we support native ARM on Linux (#157), we could potentially move back to Alpine with native phoenixd, an even smaller footprint than before. Fixes #159.
sstone
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Mar 18, 2025
pm47
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This a follow-up to #161, specifically: > The goal of using the JVM on docker was for compatibility with ARM. Once we support native ARM on Linux (#157), we could potentially move back to Alpine with native phoenixd, an even smaller footprint than before. I didn't go with Alpine because it isn't glibc based and we could run into compat issues. Nevertheless, with Debian slim the image size has been reduced from 230MB to 40MB (-80%). Cross-platform build: ```shell docker buildx build --platform linux/amd64,linux/arm64 -t acinq/phoenixd:0.6.0 --push .docker ``` From now on the image will be published on docker hub: https://hub.docker.com/repository/docker/acinq/phoenixd/general.
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The Alpine base image causes systematic crash for some libsecp256k1 operations (
secp256k1_der_parse_integer). JNI-related issues related to the use ofmuslinstead ofglibcare well documented.The issue is fixed by switching alpine for ubuntu, which is
glibc-based. Note that it makes the final image significantly larger (502MB vs 313MB).The goal of using the JVM on docker was for compatibility with ARM. Once we support native ARM on Linux (#157), we could potentially move back to Alpine with native phoenixd, an even smaller footprint than before.
Fixes #159.