fails to build docker image following official guide

[appier-rophy]

Official Guide: https://docs.opsgenie.com/docs/oec-running#running-oec-with-docker

1. Clone the repository with git clone https://github.com/opsgenie/OEC.git
2. Run docker build . -t oec

Result:

$ docker build -t oec .
Sending build context to Docker daemon  19.24MB
Step 1/12 : FROM golang:1.11.4 as builder
 ---> dd46c1256829
Step 2/12 : ADD https://github.com/golang/dep/releases/download/v0.5.0/dep-linux-amd64 /usr/bin/dep
Downloading [==================================================>]  8.718MB/8.718MB
 ---> Using cache
 ---> 4415ded0588e
Step 3/12 : RUN chmod +x /usr/bin/dep
 ---> Using cache
 ---> 8b5111a3de85
Step 4/12 : ADD . $GOPATH/src/github.com/opsgenie/oec
 ---> Using cache
 ---> 2c6d04c6285d
Step 5/12 : WORKDIR $GOPATH/src/github.com/opsgenie/oec/main
 ---> Using cache
 ---> 473df3eae05c
Step 6/12 : RUN export GIT_COMMIT=$(git rev-list -1 HEAD) &&     dep ensure -v &&     CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -a -installsuffix cgo         -ldflags "-X main.OECCommitVersion=$GIT_COMMIT -X main.OECVersion=1.0.1" -o nocgo -o /oec .
 ---> Running in 195f7a4c6ea2
could not find project Gopkg.toml, use dep init to initiate a manifest
The command '/bin/sh -c export GIT_COMMIT=$(git rev-list -1 HEAD) &&     dep ensure -v &&     CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -a -installsuffix cgo         -ldflags "-X main.OECCommitVersion=$GIT_COMMIT -X main.OECVersion=1.0.1" -o nocgo -o /oec .' returned a non-zero code: 1

I would recommend this repo to have tagged releases so we know which version has been tested for container builds, instead of always "master".

[bsc8180]

Same issue here following same steps with Docker version 19.03.12.

[Kindred]

@appier-rophy @bsc8180 Looks like it might be leftover from an older build, and it uses go mod now.

I deleted/commented out every reference to the dep command, and it seems to build just fine.

[bsc8180]

Can confirm commenting out the dep commands builds container, I have still to test it though.
Commented out version attached, will do a PR after testing.
Dockerfile.txt

[Kindred]

I've done a little testing yesterday, and had no issues with the functionality of OEC.

[Metehan Öztürk]

dep is no longer used in any release in this repo.