#Calendar implementation for the HTWK Leipzig timetable. Evaluation and display of the individual dates in iCal format.
#Copyright (C) 2024 HTWKalender support@htwkalender.de

#This program is free software: you can redistribute it and/or modify
#it under the terms of the GNU Affero General Public License as published by
#the Free Software Foundation, either version 3 of the License, or
#(at your option) any later version.

#This program is distributed in the hope that it will be useful,
#but WITHOUT ANY WARRANTY; without even the implied warranty of
#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#GNU Affero General Public License for more details.

#You should have received a copy of the GNU Affero General Public License
#along with this program.  If not, see <https://www.gnu.org/licenses/>.

# build stage
FROM docker.io/golang:alpine AS build

WORKDIR /htwkalender-ical

RUN apk add --no-cache --update go gcc g++
# Copy the source from the current directory to the Working Directory inside the container
COPY go.mod go.sum ./
RUN go mod download

COPY ical/. ./ical
COPY common/. ./common
RUN CGO_ENABLED=1 GOOS=linux go build -o /htwkalender-ical ical/main.go

# production stage
FROM docker.io/alpine:3.21 AS prod

WORKDIR /htwkalender-ical

ARG USER=ical
RUN adduser -Ds /bin/sh "$USER" && \
    mkdir -p data && \
    chown -R "$USER":"$USER" ./

# copies executable from build container
COPY --chown=$USER:$USER --chmod=744 --from=build /htwkalender-ical ./

USER $USER

# Expose port 8091 to the outside world
EXPOSE 8091

ENTRYPOINT ["./main"]