fix(container): install git in container

With the switch to Alpine in conventional-changelog#4185, `--from-last-tag` no longer works.
This is because git is no longer available in the container.

Author: jeohist

Dockerfile.ci

@@ -27,6 +27,7 @@ RUN yarn install --frozen-lockfile --network-timeout 100000 && \
 
 FROM docker.io/library/node:18-alpine
 COPY --from=builder /src/*.tgz ./
+RUN apk add --no-cache git
 RUN npm config set fetch-retry-mintimeout 20000 && \
     npm config set fetch-retry-maxtimeout 120000 && \
     npm install --no-audit -g *.tgz && \