Minimize changes.

Dockerfile

@@ -8,10 +8,10 @@ ARG GITEA_TOKEN
 ENV GITEA_TOKEN=$GITEA_TOKEN
 
 # Get and cache deps
-COPY go.mod /plugeth-statediff/
-COPY go.sum /plugeth-statediff/
+WORKDIR /plugeth-statediff/
+COPY go.mod .
+COPY go.sum .
 RUN if [ -n "$GITEA_TOKEN" ]; then git config --global url."https://$GITEA_TOKEN:@git.vdb.to/".insteadOf "https://git.vdb.to/"; fi && \
-    cd /plugeth-statediff && \
     go mod download && \
     rm -f ~/.gitconfig