image: fix due the kafka lib we are using need a external library to …

…work

Dockerfile

@@ -1,21 +1,21 @@
-# Build image (Golang)
-FROM golang:1.14-alpine AS build-stage
-ENV GO111MODULE on
-ENV CGO_ENABLED 0
+ARG BUILDER_IMAGE=golang:1.15.5-alpine
+ARG BASE_IMAGE=alpine:3.12
 
-RUN apk add --no-cache gcc git make
+FROM ${BUILDER_IMAGE} AS build-stage
+
+RUN apk add --update --no-cache alpine-sdk ca-certificates librdkafka coreutils
 
 WORKDIR /src
 ADD . .
 
 RUN go mod download
-RUN go build -o falcosidekick
+RUN go build -tags musl -gcflags all=-trimpath=/src -asmflags all=-trimpath=/src -a -installsuffix cgo -o falcosidekick .
 
 # Final Docker image
-FROM alpine AS final-stage
+FROM ${BASE_IMAGE} AS final-stage
 LABEL MAINTAINER "Thomas Labarussias <issif+falcosidekick@gadz.org>"
 
-RUN apk add --no-cache ca-certificates
+RUN apk add --update --no-cache ca-certificates librdkafka
 
 # Create user falcosidekick
 RUN addgroup -S falcosidekick && adduser -u 1234 -S falcosidekick -G falcosidekick
@@ -24,6 +24,7 @@ RUN addgroup -S falcosidekick && adduser -u 1234 -S falcosidekick -G falcosideki
 USER 1234
 
 WORKDIR ${HOME}/app
+COPY --from=build-stage /src/LICENSE .
 COPY --from=build-stage /src/falcosidekick .
 
 EXPOSE 2801

Makefile

@@ -12,6 +12,7 @@ GOPROXY := https://proxy.golang.org
 endif
 export GOPROXY
 GO ?= go
+DOCKER ?= docker
 TEST_FLAGS ?= -v -race
 
 # Directories.
@@ -33,6 +34,10 @@ GOLANGCI_LINT := $(TOOLS_BIN_DIR)/$(GOLANGCI_LINT_BIN)-$(GOLANGCI_LINT_VER)
 falcosidekick:
 	$(GO) build -o $@
 
+.PHONY: build-image
+build-image:
+	$(DOCKER) build . -t falcosecurity/falcosidekick:latest
+
 ## --------------------------------------
 ## Test
 ## --------------------------------------

go.mod

@@ -7,7 +7,7 @@ require (
 	github.com/Azure/azure-event-hubs-go/v3 v3.3.3
 	github.com/DataDog/datadog-go v4.2.0+incompatible
 	github.com/aws/aws-sdk-go v1.35.30
-	github.com/confluentinc/confluent-kafka-go v1.5.2 // indirect
+	github.com/confluentinc/confluent-kafka-go v1.5.2
 	github.com/emersion/go-sasl v0.0.0-20200509203442-7bfe0ed36a21
 	github.com/emersion/go-smtp v0.14.0
 	github.com/nats-io/nats.go v1.10.0
@@ -17,5 +17,4 @@ require (
 	golang.org/x/oauth2 v0.0.0-20201109201403-9fd604954f58
 	google.golang.org/api v0.35.0
 	gopkg.in/alecthomas/kingpin.v2 v2.2.6
-	gopkg.in/confluentinc/confluent-kafka-go.v1 v1.5.2
 )

go.sum

@@ -849,8 +849,6 @@ gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/cheggaaa/pb.v1 v1.0.25/go.mod h1:V/YB90LKu/1FcN3WVnfiiE5oMCibMjukxqG/qStrOgw=
-gopkg.in/confluentinc/confluent-kafka-go.v1 v1.5.2 h1:g0WBLy6fobNUU8W/e9zx6I0Yl79Ya+BDW1NwzAlTiiQ=
-gopkg.in/confluentinc/confluent-kafka-go.v1 v1.5.2/go.mod h1:ZdI3yfYmdNSLQPNCpO1y00EHyWaHG5EnQEyL/ntAegY=
 gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
 gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
 gopkg.in/gcfg.v1 v1.2.3/go.mod h1:yesOnuUOFQAhST5vPY4nbZsb/huCgGGXlipJsBn0b3o=

outputs/client.go

@@ -15,8 +15,9 @@ import (
 	"cloud.google.com/go/pubsub"
 	"github.com/DataDog/datadog-go/statsd"
 	"github.com/aws/aws-sdk-go/aws/session"
+	"github.com/confluentinc/confluent-kafka-go/kafka"
+
 	"github.com/falcosecurity/falcosidekick/types"
-	"gopkg.in/confluentinc/confluent-kafka-go.v1/kafka"
 )
 
 // ErrHeaderMissing = 400

outputs/kafka.go

@@ -5,8 +5,9 @@ import (
 	"log"
 
 	"github.com/DataDog/datadog-go/statsd"
+	"github.com/confluentinc/confluent-kafka-go/kafka"
+
 	"github.com/falcosecurity/falcosidekick/types"
-	"gopkg.in/confluentinc/confluent-kafka-go.v1/kafka"
 )
 
 // NewKafkaClient returns a new output.Client for accessing the Apache Kafka.