Dockerfile.binaries

# Purpose:
# -------
# This docker image is used by the ./cloudbuild-binaries.yaml CI flow to
# cross-compile geth for different platforms.
# At the time of writing this is only linux-{386/amd64} but there are two
# pending update that will add darwin-{386,amd64} and windows-amd64 support.
#
# How to test changes to this image locally:
# -----------------------------------------
# First build the image:
# docker build -f Dockerfile.binaries -t gcr.io/celo-testnet/geth-xgo-builder:$USER .
#
# Running this image depends on a series of environment variables:
#   BUILD_TARGETS       Comma separated list of platforms to build for,
#                       passed as an arg to xgo. eg: "linux/386,linux/amd64"
#   TAG_NAME            Name of the tag associated with the current commit
#   BRANCH_NAME         Name of the branch
#   REPO_NAME           Name of the repo
#   COMMIT_SHA          Full SHA of the commit
#   COMMIT_TIMESTAMP    Commit timestamp
#                       TODO: currently this is not accurately passed see
#                             discussion in PR celo-blockchain#<number>
#   CLOUDBUILD          True/False
#   CI                  True/False
#                       These two are used to comply with how geth handles build
#                       environments internal/build/env.go where we have added a
#                       branch for Cloudbuild
# You also need to mount:
#    $(pwd)/build/bin:/build - where binaries will be written
#    $(pwd)/build/archives:/archives - where the archives (final release artfeact) will be written
#    $(pwd):/go/src/github.com/celo-org/celo-blockchain - the source code
#
# With all of the above in place the container needs to execute two commands:
# (see ./cloudbuild-binaries.yaml for example of the full command)
# 1. Create the binaries:
#    go run build/ci.go xgo --alltools -- -targets=$BUILD_TARGETS -v -dest /build
# 2. Create release archives:
#    go run build/ci.go xgo-archive -targets=$_BUILD_TARGETS -in /build -out /archives
#
# This will result in build archives stored in ./build/archives
# In the CI flow these are then uploaded to cloud storage as artefacts.

# Build Geth binaries in the xgo builder container
FROM techknowlogick/xgo:go-1.16.x
# techknowlogic/xgo is a fork of karalabe/xgo updated to ubunut-18, it is more maintained
# by the community and allows us to backport mingw in order to build for windows
# See discussion in PR celo-blockchain#<number> about downsides of this image

# We need a newer version of mingw, backported to Bionic
ENV DEBIAN_FRONTEND=noninteractive
RUN apt update && apt install -y  --no-install-recommends software-properties-common apt-utils
RUN add-apt-repository -y ppa:mati865/mingw-w64
RUN apt update && apt -y upgrade

RUN mkdir -p /go/src/github.com/celo-org/celo-blockchain
WORKDIR /go/src/github.com/celo-org/celo-blockchain