fix(docker): Switch to alpine baseimage for temp file support

Dockerfile

@@ -8,8 +8,9 @@ RUN go mod download
 COPY . .
 RUN CGO_ENABLED=0 GOOS=linux go build -o server
 
-FROM scratch
+FROM alpine:3.18
+RUN mkdir -p /tmp && chmod 1777 /tmp
+
 COPY --from=builder /app/server /server
 COPY static /static
-ADD https://curl.haxx.se/ca/cacert.pem /etc/ssl/certs/ca-certificates.crt
 ENTRYPOINT [ "/server" ]