Dockerfile: merge RUN lines

Author: Andreas Blaesius

Dockerfile

@@ -1,11 +1,10 @@
 FROM python:3.11-alpine3.18
 LABEL maintainer="Michael Hausenblas, hausenbl@amazon.com"
 
-RUN apk add --no-cache git git-fast-import openssh build-base
 WORKDIR /docs
 
 COPY action.sh /action.sh
 
-RUN apk add --no-cache bash build-base && chmod +x /action.sh
+RUN apk add --no-cache bash git git-fast-import openssh build-base && chmod +x /action.sh
 
 ENTRYPOINT ["/action.sh"]