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

 #!/usr/bin/env bash
 
+set -e
+set -x
+
 # Log when the build occurred.
 date
 echo ""
@@ -13,13 +16,8 @@ echo ""
 # Common paths.
 NGINX_SRC_DIR="$OG_DIR/src/nginx"
 export NGINX_SRC_DIR
-mkdir -p "$NGINX_SRC_DIR"
-
-NGINX_SRC_ARCHIVE="$OG_DIR/src/nginx-src.tar.gz"
-EXPORT NGINX_SRC_ARCHIVE
 
-NGINX_SRC_ARCHIVE_SIGNATURE="$OG_DIR/src/nginx-src.tar.gz.asc"
-EXPORT NGINX_SRC_ARCHIVE_SIGNATURE
+mkdir -p "$NGINX_SRC_DIR"
 
 OPENSSL_DIR="$OG_DIR/src/openssl"
 export OPENSSL_DIR
@@ -31,10 +29,9 @@ NGINX_CT_DIR="$OG_DIR/src/nginx_ct"
 export NGINX_CT_DIR
 
 # Dependency: OpenSSL
-echo "DEPENDENCY: OpenSSL"
+echo ""
+echo "DEPENDENCY: OpenSSL AT $OPENSSL_TAG"
 git clone -q --recursive --depth 1 https://github.com/openssl/openssl.git -b "$OPENSSL_TAG" "$OPENSSL_DIR"
-cd "$OPENSSL_DIR" || exit
-./config
 
 # Dependency: ngx_brotli (no tagged releases)
 echo ""
@@ -43,21 +40,20 @@ git clone -q --recursive --depth 1 https://github.com/google/ngx_brotli.git "$NG
 
 # Dependency: nginx-ct
 echo ""
-echo "DEPENDENCY: nginx-ct"
+echo "DEPENDENCY: nginx-ct AT $NGINX_CT_TAG"
 git clone -q --recursive --depth 1 https://github.com/grahamedgecombe/nginx-ct.git -b "$NGINX_CT_TAG" "$NGINX_CT_DIR"
 
-# Configure nginx
+# nginx from git mirror
 echo ""
-echo "DOWNLOADING & VERIFYING NGINX RELEASE"
-cd "$OG_DIR" || exit
+echo "CLONING nginx FROM GIT MIRROR AT $NGINX_TAG"
+git clone -q --recursive --depth 1 https://github.com/nginx/nginx.git -b "$NGINX_TAG" "$NGINX_SRC_DIR"
 
-curl -o "$NGINX_SRC_ARCHIVE" "$NGINX_SRC"
-curl -o "$NGINX_SRC_ARCHIVE_SIGNATURE" "$NGINX_SIGNING"
-gpg --verify "$NGINX_SRC_ARCHIVE_SIGNATURE" "$NGINX_SRC_ARCHIVE"
+# Configure nginx
+echo ""
+echo "CONFIGURE NGINX"
+cd "$NGINX_SRC_DIR" || exit 1
 
-tar -zxvf "$NGINX_SRC_ARCHIVE" -C "$NGINX_SRC_DIR" --strip 1
-cd "$NGINX_SRC_DIR" || exit
-./configure \
+./auto/configure \
     --prefix=/etc/nginx \
     --sbin-path=/usr/sbin/nginx \
     --conf-path=/etc/nginx/nginx.conf \
@@ -101,5 +97,12 @@ cd "$NGINX_SRC_DIR" || exit
 echo ""
 echo "BUILDING NGINX"
 echo "Using $(nproc) jobs"
-make -j"$(nproc)"
-"$NGINX_SRC_DIR/objs/nginx -V"
+make
+
+if [[ ! -f "$NGINX_SRC_DIR/objs/nginx" ]]; then
+    exit 1
+fi
+
+# Verify build works
+cd "$NGINX_SRC_DIR/objs" || exit 1
+./nginx -V