chore: Workdir & mount point

Dockerfile

@@ -1,4 +1,4 @@
-FROM node:20-bookworm AS builder
+FROM node:20-slim AS builder
 
 WORKDIR /action
 
@@ -14,7 +14,16 @@ RUN pnpm install --frozen-lockfile --prod
 
 # ---
 
-FROM node:20-bookworm AS final
+FROM node:20-slim AS final
+
+RUN apt update && apt install -y git
+
+# Fix for GitHub Actions
+# fatal: detected dubious ownership in repository at '/github/workspace'
+# To add an exception for this directory, call:
+RUN mkdir -p /github/workspace && git config --global --add safe.directory /github/workspace
+
+WORKDIR /github/workspace
 
 COPY --from=builder /action/package.json /action/package.json
 COPY --from=builder /action/node_modules /action/node_modules