Various Dockerfile-s

README.md

Various Dockerfile-s

• alertmanager-bot.Dockerfile - rootless scratch version of alertmanager-bot
• ...

alertmanager-bot.Dockerfile

FROM alpine/git:v2.34.2 as build

WORKDIR /

ARG AM_BOT_VERSION="0.4.3"

RUN \
    apk add --no-cache ca-certificates~=20211220 \
    && git clone --branch ${AM_BOT_VERSION} https://github.com/metalmatze/alertmanager-bot.git am-repo \
    && wget -c https://github.com/metalmatze/alertmanager-bot/releases/download/${AM_BOT_VERSION}/alertmanager-bot-${AM_BOT_VERSION}-linux-amd64 -O alertmanager-bot

RUN addgroup --gid 10001 app \
    && adduser \
    --uid 10001 \
    --home /home/app \
    --shell /bin/ash \
    --ingroup app \
    --disabled-password \
    app

# final

FROM scratch

WORKDIR /

ENV TEMPLATE_PATHS=/templates/default.tmpl

# copy certs
COPY --from=build /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
# copy non-root user-data
COPY --from=build /etc/passwd /etc/passwd
# copy binary
COPY --from=build --chmod=755 /alertmanager-bot ./
# copy alert template
COPY --from=build /am-repo/default.tmpl /templates/default.tmpl

# user app
USER 10001

# default alertmanager-bot port
EXPOSE 8080

ENTRYPOINT [ "./alertmanager-bot" ]