diff --git a/.golangci.yml b/.golangci.yml
index a0310018..5a5ec970 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -45,6 +45,3 @@ run:
     - .devcontainer
     - .github
     - postgres
-
-service:
-  golangci-lint-version: 1.27.x # use the fixed version to not introduce new linters unexpectedly
diff --git a/Dockerfile b/Dockerfile
index 9e2aeb73..599cce2f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,10 +1,10 @@
 ARG ALPINE_VERSION=3.12
-ARG GO_VERSION=1.14
+ARG GO_VERSION=1.15
 
 FROM golang:${GO_VERSION}-alpine${ALPINE_VERSION} AS builder
 RUN apk --update add git
 ENV CGO_ENABLED=0
-ARG GOLANGCI_LINT_VERSION=v1.27.0
+ARG GOLANGCI_LINT_VERSION=v1.30.0
 RUN wget -O- -nv https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s ${GOLANGCI_LINT_VERSION}
 WORKDIR /tmp/gobuild
 COPY .golangci.yml .
@@ -14,7 +14,7 @@ COPY cmd/gluetun/main.go .
 COPY internal/ ./internal/
 RUN go test ./...
 RUN golangci-lint run --timeout=10m
-RUN go build -ldflags="-s -w" -o entrypoint main.go
+RUN go build -trimpath -ldflags="-s -w" -o entrypoint main.go
 
 FROM alpine:${ALPINE_VERSION}
 ARG VERSION
@@ -101,8 +101,6 @@ ENTRYPOINT ["/entrypoint"]
 EXPOSE 8000/tcp 8888/tcp 8388/tcp 8388/udp
 HEALTHCHECK --interval=10m --timeout=10s --start-period=30s --retries=2 CMD /entrypoint healthcheck
 RUN apk add -q --progress --no-cache --update openvpn ca-certificates iptables ip6tables unbound tinyproxy tzdata && \
-    echo "http://nl.alpinelinux.org/alpine/edge/testing" >> /etc/apk/repositories && \
-    apk add -q --progress --no-cache --update shadowsocks-libev && \
     rm -rf /var/cache/apk/* /etc/unbound/* /usr/sbin/unbound-* /etc/tinyproxy/tinyproxy.conf && \
     deluser openvpn && \
     deluser tinyproxy && \
diff --git a/go.mod b/go.mod
index 080ded43..7da3b646 100644
--- a/go.mod
+++ b/go.mod
@@ -1,12 +1,12 @@
 module github.com/qdm12/gluetun
 
-go 1.14
+go 1.15
 
 require (
 	github.com/fatih/color v1.9.0
-	github.com/golang/mock v1.4.3
+	github.com/golang/mock v1.4.4
 	github.com/kyokomi/emoji v2.2.4+incompatible
 	github.com/qdm12/golibs v0.0.0-20200712151944-a0325873bf5a
 	github.com/stretchr/testify v1.6.1
-	golang.org/x/sys v0.0.0-20200625212154-ddb9806d33ae
+	golang.org/x/sys v0.0.0-20200814200057-3d37ad5750ed
 )
diff --git a/go.sum b/go.sum
index 988a76fb..8f73faa9 100644
--- a/go.sum
+++ b/go.sum
@@ -39,6 +39,8 @@ github.com/go-openapi/validate v0.17.0 h1:pqoViQz3YLOGIhAmD0N4Lt6pa/3Gnj3ymKqQwq
 github.com/go-openapi/validate v0.17.0/go.mod h1:Uh4HdOzKt19xGIGm1qHf/ofbX1YQ4Y+MYsct2VUrAJ4=
 github.com/golang/mock v1.4.3 h1:GV+pQPG/EUUbkh47niozDcADz6go/dUwhVzdUQHIVRw=
 github.com/golang/mock v1.4.3/go.mod h1:UOMv5ysSaYNkG+OFQykRIcU/QvvxJf3p21QfJ2Bt3cw=
+github.com/golang/mock v1.4.4 h1:l75CXGRSwbaYNpl/Z2X1XIIAMSCquvXgpVZDhwEIJsc=
+github.com/golang/mock v1.4.4/go.mod h1:l3mdAwkq5BuhzHwde/uurv3sEJeZMXNpwsxVWU71h+4=
 github.com/gomodule/redigo v2.0.0+incompatible/go.mod h1:B4C85qUVwatsJoIUNIfCRsp7qO0iAmpGFZ4EELWSbC4=
 github.com/google/renameio v0.1.0/go.mod h1:KWCgfxg9yswjAJkECMjeO8J8rahYeXnNhOm40UhjYkI=
 github.com/google/uuid v1.0.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
@@ -92,6 +94,8 @@ go.uber.org/zap v1.13.0/go.mod h1:zwrFLgMcdUuIBviXEYEH1YKNaOBnKXsx2IPda5bBwHM=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20190510104115-cbcb75029529/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20200117160349-530e935923ad/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
+golang.org/x/crypto v0.0.0-20200728195943-123391ffb6de h1:ikNHVSjEfnvz6sxdSPCaPt572qowuyMDMJLLm3Db3ig=
+golang.org/x/crypto v0.0.0-20200728195943-123391ffb6de/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/lint v0.0.0-20190930215403-16217165b5de h1:5hukYrvBGR8/eNkX5mdUezrA6JiaEZDtJb9Ei+1LlBs=
 golang.org/x/lint v0.0.0-20190930215403-16217165b5de/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
 golang.org/x/mod v0.0.0-20190513183733-4bf6d317e70e/go.mod h1:mXi4GBBbnImb6dmsKGUJ2LatrhH/nqhxcFungHvyanc=
@@ -106,8 +110,8 @@ golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5h
 golang.org/x/sys v0.0.0-20190412213103-97732733099d h1:+R4KGOnez64A81RvjARKc4UT5/tI9ujCIVX+P5KiHuI=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200625212154-ddb9806d33ae h1:Ih9Yo4hSPImZOpfGuA4bR/ORKTAbhZo2AbWNRCnevdo=
-golang.org/x/sys v0.0.0-20200625212154-ddb9806d33ae/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20200814200057-3d37ad5750ed h1:J22ig1FUekjjkmZUM7pTKixYm8DvrYsvrBZdunYeIuQ=
+golang.org/x/sys v0.0.0-20200814200057-3d37ad5750ed/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=