VEC-450: use shell entrypoint with asvec as command to allow easier u…

…sage in k8s

Dockerfile

@@ -2,7 +2,6 @@
 # Build Stage
 # ----------------------
     FROM --platform=$BUILDPLATFORM golang:1.23-bookworm AS builder
-
     WORKDIR /app
 
     # Build arguments for cross-compilation
@@ -22,15 +21,22 @@
     # Build the application
     RUN \
       CGO_ENABLED=0 GOOS=$TARGETOS GOARCH=$TARGETARCH go build -o /app/target/asvec .
+    ## desire is to use distroless as the final image with sh binary but use alpine for now
+    # # ----------------------
+    # # BusyBox Stage
+    # # ----------------------
+
+    # FROM --platform=$TARGETPLATFORM busybox AS busybox
 
-# ----------------------
-# Final Stage
-# ----------------------
-    FROM --platform=$TARGETPLATFORM gcr.io/distroless/static-debian12
+    # ----------------------
+    # Final Stage
+    # ----------------------
+    FROM --platform=$TARGETPLATFORM alpine:latest
 
     # Copy the binary from the builder stage
     COPY --from=builder /app/target/asvec /usr/local/bin/asvec
 
-    # Set the entrypoint to the asvec binary
-    ENTRYPOINT ["/usr/local/bin/asvec"]
+    # Set the entrypoint to the shell
+    ENTRYPOINT ["/bin/sh", "-c"]
+    CMD ["/usr/local/bin/asvec"]