Add production Dockerfile

Signed-off-by: Steven Kriegler <61625851+justusbunsi@users.noreply.github.com>

.dockerignore

@@ -0,0 +1,7 @@
+**
+!/cmd
+!/internal
+!/vendor
+!/docker
+!go.mod
+!go.sum

Dockerfile

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+###################################
+# Build stages
+###################################
+FROM golang:1.17-alpine3.14 AS build-go
+
+ARG GOPROXY
+ENV GOPROXY ${GOPROXY:-direct}
+
+RUN apk update \
+    && apk --no-cache add build-base git bash
+
+COPY . ${GOPATH}/src/bot
+WORKDIR ${GOPATH}/src/bot
+
+RUN go build ./cmd/gitea-sonarqube-bot
+
+###################################
+# Production image
+###################################
+FROM alpine:3.14
+LABEL maintainer="justusbunsi <sk.bunsenbrenner@gmail.com>"
+
+RUN apk update \
+    && apk --no-cache add ca-certificates bash \
+    && rm -rf /var/cache/apk/*
+
+RUN addgroup -S -g 1000 bot \
+    && adduser -S -D -H -h /home/bot -s /bin/bash -u 1000 -G bot bot
+
+RUN mkdir -p /home/bot/config/
+RUN chown bot:bot /home/bot/config/
+
+COPY --chown=bot:bot docker /
+COPY --from=build-go --chown=bot:bot /go/src/bot/gitea-sonarqube-bot /usr/local/bin/gitea-sonarqube-bot
+
+#bot:bot
+USER 1000:1000
+WORKDIR /home/bot
+ENV HOME=/home/bot
+
+EXPOSE 3000
+ENV GIN_MODE "release"
+
+VOLUME ["/home/bot/config/"]
+
+ENTRYPOINT ["/usr/local/bin/docker-entrypoint.sh"]
+CMD []

docker/usr/local/bin/docker-entrypoint.sh

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+#!/usr/bin/env bash
+
+if [ $# -gt 0 ]; then
+    exec "$@"
+else
+    exec /usr/local/bin/gitea-sonarqube-bot
+fi