AWS EB Golang Build Script

build.sh

#!/bin/bash -xe
GOPATH="/tmp/go"
APP_BUILD_DIR="$GOPATH/src/project" # We will build the app here
APP_STAGING_DIR=$(pwd)              # Current directory
DEP_VERSION="v0.5.0"                # Use specific version for stability

# Install dep, a Go dependency management tool, if not already installed or if
# the version does not match.
if ! hash dep 2> /dev/null || [[ $(dep version | awk 'NR==2{print $3}') != "$DEP_VERSION" ]]; then
    curl -L -s https://github.com/golang/dep/releases/download/$DEP_VERSION/dep-linux-amd64 -o /usr/local/bin/dep
    chmod +x /usr/local/bin/dep
fi

# Remove the $APP_BUILD_DIR just in case it was left behind in a failed build.
rm -rf $APP_BUILD_DIR

# Setup the application directory
mkdir -p $APP_BUILD_DIR

# mv all files to $APP_BUILD_DIR
# https://superuser.com/questions/62141/how-to-move-all-files-from-current-directory-to-upper-directory
mv ./* .[^.]* $APP_BUILD_DIR
cd $APP_BUILD_DIR

dep ensure

# Build the binary with jsoniter tag.
go build -a -o application

# Modify permissons to make the binary executable.
chmod +x application

# Move the binary back to staging dir.
mkdir "$APP_STAGING_DIR/bin"

# By default, `bin/application` is executed. This way, a Procfile isn't needed.
mv application "$APP_STAGING_DIR/bin"

# Clean up.
rm -rf $APP_BUILD_DIR

echo "Build successful!!"