add a dockerfile

Dockerfile

@@ -0,0 +1,24 @@
+FROM docker.io/library/golang:1.17-alpine
+
+ARG GIT_REPO
+ARG GIT_BRANCH
+
+RUN set -e ; \
+    apk add --no-cache git ; \
+    cd /tmp ; \
+    git clone ${GIT_REPO} -b ${GIT_BRANCH} src ; \
+    cd /tmp/src ; \
+    echo "Pre-requisites..." ; \
+    if [ -f tools.go ]; then \
+      go install -v $(go list -f '{{join .Imports " "}}' tools.go); \
+    fi ; \
+    echo "Code generation..." ; \
+    go generate ./... ; \
+    echo "Compilation..." ; \
+    go build -o /app ; \
+    cd / ; \
+    rm -rf /tmp/src
+EXPOSE 8080
+ENTRYPOINT [ "/app" ]
+CMD [ ]
+