Merge pull request #31 from Xelon-AG/chore/dockerfile-optimization

chore(docker): use multi-stage build approach

.dockerignore

@@ -1,5 +1,7 @@
-# Ignore everything
-**
-
-## Except build folder
-!/build/**
+.github/
+build/
+deploy/
+test/
+tools/
+README.md
+.golangci.yaml

Dockerfile

@@ -1,9 +1,27 @@
 # syntax=docker/dockerfile:1
-FROM alpine:3.19
+FROM golang:1.22 AS builder
+
+ENV CGO_ENABLED=0
+
+# copy manifest files only to cache layer with dependencies
+WORKDIR /src/app/
+COPY go.mod go.sum /src/app/
+RUN go mod download
+# copy source code
+COPY cmd/ cmd/
+COPY internal/ internal/
+
+# build
+RUN go build -o xelon-csi -ldflags="-s -w" -trimpath cmd/xelon-csi/main.go
+
+
+
+FROM alpine:3.20 AS production
 
 ARG VERSION
 
-LABEL org.opencontainers.image.ref.name="xelon-csi" \
+LABEL org.opencontainers.image.licenses="Apache-2.0" \
+      org.opencontainers.image.ref.name="xelon-csi" \
       org.opencontainers.image.source="https://github.com/Xelon-AG/xelon-csi" \
       org.opencontainers.image.vendor="Xelon AG" \
       org.opencontainers.image.version="${VERSION:-local}"
@@ -20,40 +38,6 @@ RUN <<EOF
     rm -rf /var/cache/apk/*
 EOF
 
-COPY --chmod=755 xelon-csi /bin/xelon-csi
+COPY --from=builder --chmod=755 /src/app/xelon-csi /xelon-csi
 
-ENTRYPOINT ["/bin/xelon-csi"]
-
-# syntax=docker/dockerfile:1
-#FROM golang:1.22 AS builder
-#
-#ENV CGO_ENABLED=0
-#
-## copy manifest files only to cache layer with dependencies
-#WORKDIR /src/app/
-#COPY go.mod go.sum /src/app/
-#RUN go mod download
-## copy source code
-#COPY cmd/ cmd/
-#COPY internal/ internal/
-#
-## build
-#RUN go build -o xelon-cloud-controller-manager -ldflags="-s -w" -trimpath cmd/xelon-cloud-controller-manager/main.go
-#
-#
-#
-#FROM alpine:3.19 AS production
-#
-#ARG VERSION
-#
-#LABEL org.opencontainers.image.ref.name="xelon-csi" \
-#      org.opencontainers.image.source="https://github.com/Xelon-AG/xelon-csi" \
-#      org.opencontainers.image.vendor="Xelon AG" \
-#      org.opencontainers.image.version="${VERSION:-local}"
-#
-#WORKDIR /
-#USER 65532:65532
-#
-#COPY --from=builder --chmod=755 /src/app/xelon-cloud-controller-manager /xelon-cloud-controller-manager
-#
-#ENTRYPOINT ["/xelon-cloud-controller-manager"]
+ENTRYPOINT ["/xelon-csi"]