MVP build process

Doesn't push to the apt mirror yet, but it builds what I need to handle that step manually.

Closes #1

scripts/build.sh

@@ -19,10 +19,10 @@ export NGINX_SRC_DIR
 mkdir -p "$NGINX_SRC_DIR"
 
 NGINX_SRC_ARCHIVE="$OG_DIR/src/nginx-src.tar.gz"
-EXPORT NGINX_SRC_ARCHIVE
+export NGINX_SRC_ARCHIVE
 
 NGINX_SRC_ARCHIVE_SIGNATURE="$OG_DIR/src/nginx-src.tar.gz.asc"
-EXPORT NGINX_SRC_ARCHIVE_SIGNATURE
+export NGINX_SRC_ARCHIVE_SIGNATURE
 
 OPENSSL_DIR="$OG_DIR/src/openssl"
 export OPENSSL_DIR