build: manage node and pnpm with mise

Frontend stage now builds on the mise image and installs node + pnpm
from mise.toml instead of node:25 plus an unpinned global pnpm.

.dockerignore

@@ -4,8 +4,6 @@
 .gitea
 .github
 .idea
-.mise.toml
-mise.toml
 .docker
 Dockerfile
 docker-compose.yaml

Dockerfile

@@ -1,11 +1,12 @@
-FROM docker.io/library/node:25 AS frontend-builder
+FROM ghcr.io/jdx/mise:2026.10.19-debian AS frontend-builder
 LABEL authors="lucasoskorep"
 
 WORKDIR /build/mta-sign-ui
 
-COPY mta-sign-ui/package.json mta-sign-ui/pnpm-lock.yaml* ./
+COPY mise.toml ./
+RUN mise trust && mise install node pnpm
 
-RUN npm install -g pnpm@10.33.0
+COPY mta-sign-ui/package.json mta-sign-ui/pnpm-lock.yaml* ./
 
 COPY mta-sign-ui/ ./
 

mise.toml

@@ -0,0 +1,5 @@
+[tools]
+python = "3.14"
+uv = "latest"
+node = "26"
+pnpm = "10.33.0"