refactor: update Dockerfile to use debian:12-alpine and streamline dependencies

- Change base image from gcr.io/distroless/static-debian12 to debian:12-alpine for improved compatibility
- Remove temporary bash copy and retain only net-tools installation for a cleaner Dockerfile

Author: theboringhumane

server/Dockerfile

@@ -6,14 +6,11 @@ COPY . .
 
 RUN go build -ldflags="-s -w" -o rabbit.go main.go
 
-RUN apk add --no-cache net-tools bash
-
-FROM gcr.io/distroless/static-debian12:latest AS runner
+FROM debian:12-alpine AS runner
 
 COPY --from=builder /app/rabbit.go /usr/local/bin/rabbit.go
 COPY --from=builder /app/internal/database/migrations.sql /usr/local/bin/internal/database/migrations.sql
-# temporary fix for bash
-COPY --from=builder /bin/bash /bin/bash
+RUN apk add --no-cache net-tools
 
 # 9999 is the tunnel server port
 # 3422 is the API port (never expose this port to the internet)