remove oci archive demo from frontpage

no longer works (tabs use nixery now), and a bit contrived. not worth
being front and center, we have a lot of demos already.

along the way, remove a few broken nixery.dev references.

demos/addrs.bass

@@ -13,6 +13,6 @@
     ;
     ; starts the two servers, waits for the ports to be ready, and resolves to
     ; a string using the given template
-    (run (from (linux/nixery.dev/shell/curl)
-           ($ curl -s (addr hello :http "http://$host:$port"))
-           ($ curl -s (addr world :http "http://$host:$port"))))))
+    (run (from (linux/alpine)
+           ($ wget -O- (addr hello :http "http://$host:$port"))
+           ($ wget -O- (addr world :http "http://$host:$port"))))))

docs/lit/bassics.lit

@@ -478,8 +478,8 @@ that allow it to do a lot with a little.
   }{{{
     (defn echo [msg]
       (let [server (http-server msg)]
-        (from (linux/nixery.dev/shell/curl)
-          ($ curl -s (addr server :http "http://$host:$port")))))
+        (from (linux/alpine)
+          ($ wget -O- (addr server :http "http://$host:$port")))))
 
     (echo "Hello, world!")
   }}}{

docs/lit/index.lit

@@ -129,8 +129,8 @@ release}{https://github.com/vito/bass/releases/latest} and skim the
 }{{{
   (defn echo [msg]
     (let [server (http-server msg)]
-      (from (linux/nixery.dev/shell/curl)
-        ($ curl -s (addr server :http "http://$host:$port")))))
+      (from (linux/alpine)
+        ($ wget -O- (addr server :http "http://$host:$port")))))
 
   (echo "Hello, world!")
 }}}{
@@ -180,7 +180,7 @@ release}{https://github.com/vito/bass/releases/latest} and skim the
   provenance:
 }{{{
   (let [repro (mkfile ./file.json (json built))]
-    (from (nixery.dev/gh)
+    (from (linux/nixery.dev/gh)
       ($ gh release create v0.0.1 $repro)))
 }}}
 
@@ -223,53 +223,6 @@ release}{https://github.com/vito/bass/releases/latest} and skim the
   the \code{bass.lock} file in-place.
 }
 
-\demo-literate{building images}{
-  Bass eliminates the need for one-off \code{Dockerfiles} and toilsome image
-  registry push/pull.
-
-  You just write thunks instead!
-}{{{
-  (def wget
-    (from (linux/alpine)
-      ($ apk add wget)))
-
-  (-> (from wget
-        ($ wget --version))
-      (read :lines)
-      next)
-}}}{
-  \link{Nix}{https://nixos.org} fans are probably seething right now. This
-  isn't \t{hermetic} at all! The version of \code{wget} is a total wildcard!
-  What if it changes? The house of cards could come crumbling down!
-
-  Worry not: you can use any command you want to build images. You can use
-  \code{nix build} or any other tool to create an \link{OCI image
-  tarball}{https://github.com/opencontainers/image-spec/blob/main/image-layout.md}
-  and then use that image for other thunks.
-}{{{
-  (use (.git (linux/alpine/git))
-       ; a module for doing cached nix builds
-       (git:github/vito/tabs/ref/main/nix.bass))
-
-  ; an image with wget installed
-  (def image
-    {:file (nix:result
-             (cd git:github/vito/tabs/ref/main/
-               ($ nix build ".#wget"))
-             ./image.tar)
-     :platform {:os "linux"}
-     :tag "latest"})
-
-  (-> (from image
-        ($ wget --version))
-      (read :lines)
-      next)
-}}}{
-  Bass does everything it can to support \t{hermetic} thunks, but it stops
-  short of enforcing the practice. If Nix isn't worth the investment yet, YOLO
-  and \code{apt-get} away and fix it when it breaks.
-}
-
 \demo-literate{webhook-driven CI/CD}{
   \link{Bass Loop}{https://loop.bass-lang.org} is a public service for calling
   Bass code in response to webhooks.