Use more recent base images

Signed-off-by: David Gageot <[email protected]>

Author: dgageot

src/extension/Dockerfile

@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1.4
 
-FROM --platform=$BUILDPLATFORM node:23-alpine3.20 AS client-builder
+FROM --platform=$BUILDPLATFORM node:23-alpine3.21@sha256:86703151a18fcd06258e013073508c4afea8e19cd7ed451554221dd00aea83fc AS client-builder
 WORKDIR /ui
 COPY ui/package.json ui/package-lock.json ./
 RUN --mount=type=cache,target=/usr/src/app/.npm \
@@ -9,7 +9,7 @@ RUN --mount=type=cache,target=/usr/src/app/.npm \
 COPY ui/. .
 RUN npm run build
 
-FROM alpine:3.20
+FROM alpine:3.21@sha256:a8560b36e8b8210634f77d9f7f9efd7ffa463e380b75e2e74aff4511df3ef88c
 ARG TARGETARCH
 LABEL org.opencontainers.image.title="Docker MCP Toolkit" \
     org.opencontainers.image.description="Docker MCP Toolkit is a Docker Desktop Extension allowing to connect dockerized MCP servers to MCP Clients" \