Docker images are not official ASF releases but provided for convenience. Recommended usage is always to build the source.
# Assign Apache release version number to variable `APISIX_VERSION`, for example: 2.2. The latest version can be find at `https://github.com/apache/apisix/releases` export APISIX_VERSION=2.9 make build-on-alpine
export APISIX_VERSION=master make build-on-alpine