Stellar Core image built on Alpine Linux. Just in case you're building your Stellar tool using Alpine as a source too.
To use it as build source for other container do:
ARG STELLAR_CORE_VERSION=v11.3.0
FROM astroband/docker-stellar-core-alpine:${STELLAR_CORE_VERSION} AS stellar-core
# On target container:
RUN apk add --no-cache libpq libstdc++ curl
COPY --from=stellar-core /usr/local/bin/stellar-core .Check available tags on Dockerhub