Set correct cURL version/release-date

Signed-off-by: Joe Groocock <me@frebib.net>

Dockerfile

@@ -8,7 +8,7 @@ ARG LIBXSLT_VER=1.1.37
 ARG XMLSTAR_VER=1.6.1
 ARG OPENSSL_VER=3.0.8
 ARG NGHTTP2_VER=1.52.0
-ARG CURL_VER=curl-8_0_1
+ARG CURL_VER=8.0.1
 
 ARG OUTPUT=/output
 ARG DESTDIR=/prefix
@@ -245,13 +245,19 @@ RUN git clone https://github.com/nghttp2/nghttp2.git -b v$NGHTTP2_VER --depth 1
  && cp -aP "$DESTDIR"/usr/lib/libnghttp2*.so* "$OUTPUT/usr/lib"
 
 # /usr/lib # curl --version
-# curl 7.74.0-DEV (x86_64-pc-linux-musl) libcurl/7.73.0-DEV OpenSSL/1.1.1i zlib/1.2.11 nghttp2/1.41.0
+# curl 8.0.1 (x86_64-pc-linux-musl) libcurl/8.0.1 OpenSSL/3.0.8 zlib/1.2.13 nghttp2/1.52.0
+# Release-Date: 2023-03-20
 # Protocols: http https
-# Features: AsynchDNS HTTP2 HTTPS-proxy IPv6 Largefile libz SSL UnixSockets
+# Features: alt-svc AsynchDNS HSTS HTTP2 HTTPS-proxy IPv6 Largefile libz SSL threadsafe UnixSockets
 
 ARG CURL_VER
 WORKDIR /tmp/curl
-RUN git clone https://github.com/curl/curl.git --branch $CURL_VER --depth 1 . \
+RUN export CURL_TAG=curl-${CURL_VER//./_} \
+ && git clone https://github.com/curl/curl.git --branch $CURL_TAG --depth 1 . \
+ && sed -i \
+        -e "/\WLIBCURL_VERSION\W/c #define LIBCURL_VERSION \"$CURL_VER\"" \
+        -e "/\WLIBCURL_TIMESTAMP\W/c #define LIBCURL_TIMESTAMP \"$(git log -1 --format=%cs "$CURL_TAG")\"" \
+        include/curl/curlver.h \
  && autoreconf -sif \
  && ./configure \
         --prefix=/usr \