Not able to build docker image for version v.2.26.1

[ronaldoafonso]

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Description of the bug or feature request
I'm not able to build a bettercap docker image using version v2.26.1 from GitHub repository.

Environment

• Bettercap version you are using. ( git checkout -b v2.26.1 ).
  v2.26.1

• OS version and architecture you are using.
  [ronaldo@fox ~]$ lsb_release -a
  LSB Version: 1.4
  Distributor ID: Arch
  Description: Arch Linux
  Release: rolling
  Codename: n/a
  [ronaldo@fox ~]$ uname -m
  x86_64

• Docker version
  [ronaldo@fox bettercap]$ docker version
  Client:
  Version: 18.09.7-ce
  API version: 1.39
  Go version: go1.12.6
  Git commit: 2d0083d657
  Built: Tue Jul 2 01:00:04 2019
  OS/Arch: linux/amd64
  Experimental: false

Server:
Engine:
Version: 18.09.7-ce
API version: 1.39 (minimum version 1.12)
Go version: go1.12.6
Git commit: 2d0083d657
Built: Tue Jul 2 00:59:35 2019
OS/Arch: linux/amd64
Experimental: false

• Go version if building from sources.
  From the docker image
  [ronaldo@fox bettercap]$ docker container run --rm -it golang:alpine /usr/local/go/bin/go version
  go version go1.13.3 linux/amd64

• Command line arguments you are using.
  docker image build -t bettercap/bettercap:v2.26.1 .

• Caplet code you are using or the interactive session commands.
  Not applicable (I think)

• Full debug output while reproducing the issue ( bettercap -debug ... ).
  See "Actual behavior" bellow of the "Steps to Reproduce".

Steps to Reproduce

1. git clone https://github.com/bettercap/bettercap.git
2. cd bettercap/
3. git checkout -b v2.26.1
4. docker image build -t bettercap/bettercap:v2.26.1 .

Expected behavior: What you expected to happen
I expect to have a docker image built so I can use bettercap from Docker.

Actual behavior: What actually happened
The image was not built and the following is the output of the image building process:

Sending build context to Docker daemon 19.81MB
Step 1/19 : FROM golang:alpine AS build-env
alpine: Pulling from library/golang
Digest: sha256:40278d43a27b6e0563fcc4dd52c991a25741b1a775402aea342ab9a80158e69e
Status: Downloaded newer image for golang:alpine
---> f23ef2e47d30
Step 2/19 : ENV SRC_DIR $GOPATH/src/github.com/bettercap/bettercap
---> Using cache
---> c6e14afd6ac1
Step 3/19 : RUN apk add --update ca-certificates
---> Using cache
---> c494b5d3f2c3
Step 4/19 : RUN apk add --no-cache --update bash iptables wireless-tools build-base libpcap-dev libusb-dev linux-headers libnetfilter_queue-dev git
---> Using cache
---> d47df13fd04b
Step 5/19 : WORKDIR $SRC_DIR
---> Using cache
---> 05718fd04d47
Step 6/19 : ADD . $SRC_DIR
---> Using cache
---> eb62518cb0ec
Step 7/19 : RUN go get -u github.com/golang/dep/...
---> Running in 0d405fc34c6b
go: finding github.com/golang/dep v0.5.4
go: downloading github.com/golang/dep v0.5.4
go: extracting github.com/golang/dep v0.5.4
go: downloading github.com/pkg/errors v0.8.1
go: downloading golang.org/x/sys v0.0.0-20191018095205-727590c5006e
go: downloading golang.org/x/sync v0.0.0-20190423024810-112230192c58
go: finding github.com/nightlyone/lockfile latest
go: finding github.com/armon/go-radix v1.0.0
go: finding github.com/boltdb/bolt v1.3.1
go: finding github.com/Masterminds/semver v1.5.0
go: finding github.com/Masterminds/vcs v1.13.1
go: extracting github.com/pkg/errors v0.8.1
go: finding github.com/golang/protobuf v1.3.2
go: finding github.com/sdboyer/constext latest
go: downloading github.com/armon/go-radix v1.0.0
go: downloading github.com/boltdb/bolt v1.3.1
go: extracting golang.org/x/sync v0.0.0-20190423024810-112230192c58
go: downloading github.com/Masterminds/semver v1.5.0
go: downloading github.com/Masterminds/vcs v1.13.1
go: downloading github.com/nightlyone/lockfile v0.0.0-20180618180623-0ad87eef1443
go: extracting github.com/Masterminds/vcs v1.13.1
go: extracting github.com/Masterminds/semver v1.5.0
go: downloading github.com/golang/protobuf v1.3.2
go: extracting github.com/nightlyone/lockfile v0.0.0-20180618180623-0ad87eef1443
go: downloading github.com/sdboyer/constext v0.0.0-20170321163424-836a14457353
go: finding github.com/jmank88/nuts v0.4.0
go: finding gopkg.in/yaml.v2 v2.2.4
go: downloading github.com/jmank88/nuts v0.4.0
go: extracting github.com/sdboyer/constext v0.0.0-20170321163424-836a14457353
go: downloading gopkg.in/yaml.v2 v2.2.4
go: extracting golang.org/x/sys v0.0.0-20191018095205-727590c5006e
go: extracting github.com/golang/protobuf v1.3.2
go: extracting github.com/jmank88/nuts v0.4.0
go: finding github.com/pelletier/go-toml v1.6.0
go: extracting gopkg.in/yaml.v2 v2.2.4
go: downloading github.com/pelletier/go-toml v1.6.0
go: extracting github.com/pelletier/go-toml v1.6.0
go: extracting github.com/armon/go-radix v1.0.0
go: extracting github.com/boltdb/bolt v1.3.1
go: downloading golang.org/x/sys v0.0.0-20191026070338-33540a1f6037
go: extracting golang.org/x/sys v0.0.0-20191026070338-33540a1f6037
go: finding golang.org/x/sys latest
go: finding golang.org/x/sync latest
go: finding github.com/pkg/errors v0.8.1
go: downloading golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e
go: downloading golang.org/x/sys v0.0.0-20191029155521-f43be2a4598c
go: extracting golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e
go: extracting golang.org/x/sys v0.0.0-20191029155521-f43be2a4598c

github.com/golang/dep/gps

/go/pkg/mod/github.com/golang/[email protected]/gps/constraint.go:149:4: undefined: semver.Constraint
The command '/bin/sh -c go get -u github.com/golang/dep/...' returned a non-zero code: 2

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