fix: make it compatible with the newest Docker Hub API again

Dockerfile

@@ -1,3 +1,6 @@
+ARG BUILD_DATE
+ARG VERSION=latest
+
 FROM gofunky/golang:1.15.0 as i__builder
 
 COPY . $GOPATH/src/github.com/gofunky/tuplip
@@ -7,8 +10,6 @@ ENV GOOS=linux
 ENV GOARCH=amd64
 ENV GO111MODULE=on
 
-ARG VERSION=latest
-
 RUN go get -v github.com/ahmetb/govvv
 RUN govvv build -v -o /go/bin/tuplip ./cmd/tuplip
 RUN go test -v ./...
@@ -21,11 +22,7 @@ RUN chmod +x /usr/local/bin/tuplip
 
 ENTRYPOINT ["/usr/local/bin/tuplip"]
 
-ARG VERSION=latest
-ARG BUILD_DATE
-ARG VCS_REF
-
-LABEL org.label-schema.build-date=$BUILD_DATE \
-      org.label-schema.vcs-url="https://github.com/gofunky/tuplip" \
-      org.label-schema.version=$VERSION \
-      org.label-schema.schema-version="1.0"
+LABEL org.label-schema.build-date=$BUILD_DATE
+LABEL org.label-schema.vcs-url="https://github.com/gofunky/tuplip"
+LABEL org.label-schema.version=$VERSION
+LABEL org.label-schema.schema-version="1.0"

README.md

@@ -165,7 +165,7 @@ The `tuplip find` command not only checks the order, it also finds a suitable ve
 Let's assume we always want the latest git version but we require alpine 3.8.
 
 ```bash
-tuplip find gofunky/git from alpine:3.8
+tuplip find in gofunky/git from alpine:3.8
 ```
 
 Then, the most appropriate image would be: 
@@ -334,7 +334,7 @@ will return the vectors `golang:1.11.0` and `alpine:3.8`.
 
 #### Ignored Instructions
 
-Any `FROM` instructions that use an alias with the prefix `i__` (e.g., `__builder`) will be ignored.
+Any `FROM` instructions that use an alias with the prefix `i__` (e.g., `i__builder`) will be ignored.
 
 ## Flags
 

go.mod

@@ -1,26 +1,24 @@
 module github.com/gofunky/tuplip
 
+go 1.15
+
 require (
-	github.com/alecthomas/kong v0.1.16-0.20190121131426-2a90ca2ad300
-	github.com/asaskevich/govalidator v0.0.0-20180720115003-f9ffefc3facf // indirect
-	github.com/docker/distribution v2.7.0+incompatible // indirect
+	github.com/alecthomas/kong v0.2.11
+	github.com/asaskevich/govalidator v0.0.0-20200819183940-29e1ff8eb0bb // indirect
+	github.com/docker/distribution v2.7.1+incompatible // indirect
 	github.com/docker/libtrust v0.0.0-20160708172513-aabc10ec26b7 // indirect
-	github.com/emicklei/dot v0.10.1
-	github.com/francoispqt/onelog v0.0.0-20181228065221-f24ed9c6639d
+	github.com/emicklei/dot v0.11.0
+	github.com/francoispqt/onelog v0.0.0-20190306043706-8c2bb31b10a4
 	github.com/go-ozzo/ozzo-validation v3.6.0+incompatible
 	github.com/gofunky/automi v0.3.5
-	github.com/gofunky/pyraset/v2 v2.0.4
+	github.com/gofunky/pyraset/v2 v2.0.5
 	github.com/gofunky/semver v3.5.2+incompatible
 	github.com/google/go-cmp v0.5.1
-	github.com/gorilla/context v1.1.1 // indirect
-	github.com/gorilla/mux v1.6.2 // indirect
-	github.com/mattn/go-runewidth v0.0.4 // indirect
-	github.com/nokia/docker-registry-client v0.0.0-20181128224058-bf401ccb7530
-	github.com/nsf/termbox-go v0.0.0-20190104133558-0938b5187e61 // indirect
+	github.com/gorilla/mux v1.7.4 // indirect
+	github.com/nokia/docker-registry-client v0.0.0-20190305095957-e91f10057c5b
 	github.com/oleiade/reflections v1.0.0
-	github.com/opencontainers/go-digest v1.0.0-rc1 // indirect
+	github.com/opencontainers/go-digest v1.0.0 // indirect
 	github.com/opencontainers/image-spec v1.0.1 // indirect
 	github.com/rendon/testcli v0.0.0-20161027181003-6283090d169f
-	github.com/sirupsen/logrus v1.3.0 // indirect
-	github.com/stretchr/testify v1.3.0 // indirect
+	github.com/sirupsen/logrus v1.6.0 // indirect
 )

go.sum

@@ -1,100 +1,70 @@
 github.com/OneOfOne/xxhash v1.2.2 h1:KMrpdQIwFcEqXDklaen+P1axHaj9BSKzvpUUfnHldSE=
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hooks/build

@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
 
-docker build --build-arg BUILD_DATE=$(date -u +”%Y-%m-%dT%H:%M:%SZ”) \
-  --build-arg VERSION=${DOCKER_TAG} \
-  -t ${IMAGE_NAME} .
+docker build --build-arg BUILD_DATE="$(date -u +'%Y-%m-%dT%H:%M:%SZ')" \
+  --build-arg VERSION="DOCKER_TAG" \
+  -t "$IMAGE_NAME" .