Go(lang) alpine Dockerfile template

Dockerfile

FROM golang:latest AS builder

##### Only for PRIVATE git repositories #####
# required credentials for go package repositories
# bitbucket user and token MUST be either URL encoded or only contain alphanumeric characters.

# Kaniko --build-arg ${item.key}=${item.value} "
#ARG BITBUCKET_USER
#ARG BITBUCKET_TOKEN
#ARG BITBUCKET_DOMAIN

#RUN git config --global url."https://$BITBUCKET_USER:$BITBUCKET_TOKEN@$BITBUCKET_DOMAIN".insteadOf "https://$BITBUCKET_DOMAIN" \
#    && go env -w GOPRIVATE=$BITBUCKET_DOMAIN
##################################################

COPY . /build/
WORKDIR /build/

RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -a -v -o application .

FROM alpine:latest
RUN apk update && apk --no-cache add \
    ca-certificates \
    tzdata

# change timezone to Europe/Berlin - Jnekins location
# https://wiki.alpinelinux.org/wiki/Setting_the_timezone
RUN cp /usr/share/zoneinfo/Europe/Berlin /etc/localtime && \
    echo "Europe/Berlin" >  /etc/timezone && \
    apk del tzdata


# Create a group and user
RUN addgroup -S gruser && adduser -u 1001 -G gruser -S gguser

COPY --from=builder --chown=1001:0 /build/application /.

# read the README for environment variables

USER gguser
WORKDIR /
CMD ["./application"]