chore: remove redundant steps in etdcrestore docker build

Signed-off-by: Carlos Salas <carlos.salas@suse.com>

exp/etcdrestore/Dockerfile

@@ -34,24 +34,10 @@ ARG goproxy=https://proxy.golang.org
 # Run this with docker build --build-arg package=./exp/etcdrestore
 ENV GOPROXY=$goproxy
 
-# Copy the Go Modules manifests
-COPY exp/etcdrestore/go.mod /go.mod
-COPY exp/etcdrestore/go.sum /go.sum
-
-# Cache deps before building and copying source so that we don't need to re-download as much
-# and so that source changes don't invalidate our downloaded layer
-RUN --mount=type=cache,target=/go/pkg/mod \
-    go mod download
-
 # Copy the sources
 COPY ./ ./
 
-# Cache the go build into the Go’s compiler cache folder so we take benefits of compiler caching across docker build calls
-RUN --mount=type=cache,target=/root/.cache/go-build \
-    --mount=type=cache,target=/go/pkg/mod \
-     sh -c "cd exp/etcdrestore && go build ."
-
-# # Build
+# Build
 ARG ARCH
 ARG ldflags
 
@@ -67,4 +53,4 @@ WORKDIR /
 COPY --from=builder /workspace/exp/etcdrestore/manager .
 # Use uid of nonroot user (65532) because kubernetes expects numeric user when applying pod security policies
 USER 65532
-ENTRYPOINT ["/manager"]
+ENTRYPOINT ["/manager"]