Add version info (#52)

* add version info

* add default value

.github/workflows/build.yaml

@@ -20,14 +20,14 @@ jobs:
 
       - name: Build image
         run: |
-          export IMAGE_TAG=${GITHUB_REF#refs/tags/}
-          export IMAGE_TAG_MINOR=$(echo ${IMAGE_TAG} | awk '{match($0,"v[0-9].[0-9]",a)}END{print a[0]}')
-          export IMAGE_TAG_MAJOR=$(echo ${IMAGE_TAG} | awk '{match($0,"v[0-9]",a)}END{print a[0]}')
-          docker build \
+          export VERSION=${GITHUB_REF#refs/tags/}
+          export VERSION_MINOR=$(echo ${VERSION} | awk '{match($0,"v[0-9].[0-9]",a)}END{print a[0]}')
+          export VERSION_MAJOR=$(echo ${VERSION} | awk '{match($0,"v[0-9]",a)}END{print a[0]}')
+          docker build --build-arg ACTION_VERSION=${VERSION} \
           -t morphy/revive-action \
-          -t morphy/revive-action:${IMAGE_TAG} \
-          -t morphy/revive-action:${IMAGE_TAG_MINOR} \
-          -t morphy/revive-action:${IMAGE_TAG_MAJOR} .
+          -t morphy/revive-action:${VERSION} \
+          -t morphy/revive-action:${VERSION_MINOR} \
+          -t morphy/revive-action:${VERSION_MAJOR} .
 
       - name: Publish image
         run: docker push --all-tags morphy/revive-action

Dockerfile

@@ -1,13 +1,17 @@
 FROM golang:1.16.4 as build-env
 
+ARG ACTION_VERSION=unknown
+ARG REVIVE_VERSION=v1.0.7
+
 ENV CGO_ENABLED=0
 
-RUN go get -v github.com/mgechev/revive@v1.0.7
+RUN go install -v -ldflags="-X 'main.version=${REVIVE_VERSION}'" \
+    github.com/mgechev/revive@${REVIVE_VERSION}
 
 WORKDIR /tmp/github.com/morphy2k/revive-action
 COPY . .
 
-RUN go install
+RUN go install -ldflags="-X 'main.version=${ACTION_VERSION}'"
 
 FROM alpine:3.13.5
 
@@ -23,6 +27,6 @@ LABEL com.github.actions.color="blue"
 COPY --from=build-env ["/go/bin/revive", "/go/bin/revive-action", "/bin/"]
 COPY --from=build-env /tmp/github.com/morphy2k/revive-action/entrypoint.sh /
 
-RUN apk add --no-cache bash
+RUN apk add --no-cache bash gawk
 
 ENTRYPOINT ["/entrypoint.sh"]

entrypoint.sh

@@ -5,6 +5,9 @@ set -o pipefail
 
 cd "$GITHUB_WORKSPACE"
 
+ACTION_VERSION=$(revive-action -version)
+REVIVE_VERSION=$(revive -version | gawk '{match($0,"v[0-9].[0-9].[0-9]",a)}END{print a[0]}')
+
 LINT_PATH="./..."
 
 if [ ! -z "${INPUT_PATH}" ]; then LINT_PATH=$INPUT_PATH; fi
@@ -16,4 +19,7 @@ done
 
 if [ ! -z "${INPUT_CONFIG}" ]; then CONFIG="-config=$INPUT_CONFIG"; fi
 
+echo "ACTION: $ACTION_VERSION
+REVIVE: $REVIVE_VERSION"
+
 eval "revive $CONFIG $EXCLUDES -formatter ndjson $LINT_PATH | revive-action"

main.go

@@ -2,12 +2,15 @@ package main
 
 import (
 	"encoding/json"
+	"flag"
 	"fmt"
 	"go/token"
 	"os"
 	"sync"
 )
 
+var version = "unknown"
+
 type failure struct {
 	Failure    string
 	RuleName   string
@@ -60,6 +63,14 @@ func printFailure(f *failure, wg *sync.WaitGroup) {
 }
 
 func main() {
+	printVersion := flag.Bool("version", false, "Print version")
+	flag.Parse()
+
+	if *printVersion {
+		fmt.Println(version)
+		os.Exit(0)
+	}
+
 	stats := &statistics{}
 
 	ch := make(chan *failure)