Move the gateway to junior.gib: CI deploy, compose copy, renewal script, docs

gateway/Containerfile

@@ -9,7 +9,7 @@ WORKDIR /app
 COPY package.json tsconfig.json ./
 COPY src ./src
 
-# `wristcode <command>` for operators: docker exec -it wristcode-gateway wristcode pair
+# `wristcode <command>` for operators: podman exec -it wristcode-gateway wristcode pair
 RUN printf '#!/bin/sh\nexec bun /app/src/cli.ts "$@"\n' > /usr/local/bin/wristcode \
     && chmod +x /usr/local/bin/wristcode \
     && mkdir -p /data && chown bun:bun /data