Dockerfile

#
# Build
#

FROM golang:1.12-alpine AS builder

ENV GO_DOMAIN="github.com" \
    GO_GROUP="otaviof" \
    GO_PROJECT="vault-handler"

ENV APP_DIR="${GOPATH}/src/${GO_DOMAIN}/${GO_GROUP}/${GO_PROJECT}"

RUN apk --update add git make
RUN go get -u github.com/golang/dep/cmd/dep

RUN mkdir -v -p ${APP_DIR}
WORKDIR ${APP_DIR}

COPY Makefile Gopkg.* ./
RUN make clean clean-vendor bootstrap

COPY . ./
RUN make

#
# Run
#

FROM golang:1.12-alpine

ENV GO_DOMAIN="github.com" \
    GO_GROUP="otaviof" \
    GO_PROJECT="vault-handler"

ENV APP_DIR="${GOPATH}/src/${GO_DOMAIN}/${GO_GROUP}/${GO_PROJECT}" \
    USER_UID="1111" \
    VAULT_HANDLER_OUTPUT_DIR="/var/lib/vault-handler"

RUN apk --update add bash
COPY --from=builder ${APP_DIR}/build/${GO_PROJECT} /usr/local/bin/${GO_PROJECT}

RUN adduser -h ${VAULT_HANDLER_OUTPUT_DIR} -D -u ${USER_UID} ${GO_PROJECT}
USER ${USER_UID}

VOLUME ${VAULT_HANDLER_OUTPUT_DIR}
WORKDIR ${VAULT_HANDLER_OUTPUT_DIR}

ENTRYPOINT [ "/usr/local/bin/vault-handler" ]