diff --git a/.forgejo/workflows/build-container.yaml b/.forgejo/workflows/build-container.yaml
index 7f09630..36134b8 100644
--- a/.forgejo/workflows/build-container.yaml
+++ b/.forgejo/workflows/build-container.yaml
@@ -139,18 +139,12 @@ jobs:
           CONTAINER="${{ matrix.container }}"
           NIX_FILE="containers/$CONTAINER/default.nix"
 
-          # Try extracting version = "..." from the nix file
+          # Extract version = "..." from the nix file
           VERSION=$(grep -m1 '^\s*version\s*=\s*"' "$NIX_FILE" \
             | sed 's/.*"\(.*\)".*/\1/' || true)
 
-          # Fall back to nix eval for nixpkgs packages
           if [ -z "$VERSION" ]; then
-            VERSION=$(nix --extra-experimental-features "nix-command flakes" \
-              eval --raw "nixpkgs#${CONTAINER}.version")
-          fi
-
-          if [ -z "$VERSION" ]; then
-            echo "Error: Could not determine version for $CONTAINER"
+            echo "Error: No version declaration found in $NIX_FILE"
             exit 1
           fi
 
diff --git a/containers/nettest/Dockerfile b/containers/nettest/Dockerfile
deleted file mode 100644
index 4bb1284..0000000
--- a/containers/nettest/Dockerfile
+++ /dev/null
@@ -1,27 +0,0 @@
-# Network connectivity test container for blumeops CI/CD debugging
-#
-# This container tests connectivity to tailnet services from various environments:
-# - Docker on indri (during CI build)
-# - Minikube pods (manual testing)
-
-ARG CONTAINER_APP_VERSION=0.1.0
-
-FROM alpine:3.22
-
-ARG CONTAINER_APP_VERSION
-LABEL org.opencontainers.image.title="nettest"
-LABEL org.opencontainers.image.description="Network connectivity test container for CI/CD debugging"
-LABEL org.opencontainers.image.version="${CONTAINER_APP_VERSION}"
-LABEL org.opencontainers.image.source="https://forge.eblu.me/eblume/blumeops"
-LABEL org.opencontainers.image.vendor="blumeops"
-
-RUN apk add --no-cache \
-    curl \
-    ca-certificates \
-    jq \
-    bind-tools
-
-COPY test-connectivity.sh /test-connectivity.sh
-RUN chmod +x /test-connectivity.sh
-
-ENTRYPOINT ["/test-connectivity.sh"]
diff --git a/containers/nettest/default.nix b/containers/nettest/default.nix
deleted file mode 100644
index 4520804..0000000
--- a/containers/nettest/default.nix
+++ /dev/null
@@ -1,39 +0,0 @@
-# Nix-built nettest container
-# Equivalent to the Dockerfile: curl, jq, bind (nslookup), ca-certs, bash
-# Built with dockerTools.buildLayeredImage for efficient layer caching
-{ pkgs ? import <nixpkgs> { } }:
-
-let
-  testScript = ./test-connectivity.sh;
-
-  tools = pkgs.buildEnv {
-    name = "nettest-tools";
-    paths = [
-      pkgs.curl
-      pkgs.jq
-      pkgs.dnsutils # provides nslookup, dig
-      pkgs.cacert
-      pkgs.coreutils
-      pkgs.hostname
-      pkgs.bashInteractive
-    ];
-  };
-in
-pkgs.dockerTools.buildLayeredImage {
-  name = "blumeops/nettest";
-  tag = "latest";
-
-  contents = [ tools ];
-
-  extraCommands = ''
-    cp ${testScript} test-connectivity.sh
-    chmod +x test-connectivity.sh
-  '';
-
-  config = {
-    Entrypoint = [ "/bin/bash" "/test-connectivity.sh" ];
-    Env = [
-      "SSL_CERT_FILE=${pkgs.cacert}/etc/ssl/certs/ca-bundle.crt"
-    ];
-  };
-}
diff --git a/containers/nettest/test-connectivity.sh b/containers/nettest/test-connectivity.sh
deleted file mode 100644
index e97f417..0000000
--- a/containers/nettest/test-connectivity.sh
+++ /dev/null
@@ -1,115 +0,0 @@
-#!/bin/ash
-# shellcheck shell=dash
-# Network connectivity test script for blumeops
-# Tests access to tailnet services from within the container
-
-set -e
-
-echo "========================================"
-echo "BlumeOps Network Connectivity Test"
-echo "========================================"
-echo ""
-echo "Timestamp: $(date -Iseconds)"
-echo "Hostname: $(hostname)"
-echo ""
-
-# Test targets
-FORGE_HOST="forge.ops.eblu.me"
-REGISTRY_HOST="registry.ops.eblu.me"
-
-test_dns() {
-    local host="$1"
-    echo "--- DNS: $host ---"
-    if nslookup "$host" 2>/dev/null; then
-        echo "DNS: OK"
-        return 0
-    else
-        echo "DNS: FAILED"
-        return 1
-    fi
-}
-
-test_https() {
-    local url="$1"
-    local name="$2"
-    echo ""
-    echo "--- HTTPS: $name ---"
-    echo "URL: $url"
-
-    # Try to fetch with verbose output
-    http_code=$(curl -s -o /dev/null -w "%{http_code}" --max-time 10 "$url" 2>&1) || true
-
-    if [ "$http_code" = "200" ] || [ "$http_code" = "401" ] || [ "$http_code" = "302" ]; then
-        echo "HTTP Status: $http_code"
-        echo "Result: OK (service reachable)"
-        return 0
-    elif [ -n "$http_code" ] && [ "$http_code" != "000" ]; then
-        echo "HTTP Status: $http_code"
-        echo "Result: OK (service reachable, status $http_code)"
-        return 0
-    else
-        echo "HTTP Status: $http_code"
-        echo "Result: FAILED (could not connect)"
-        return 1
-    fi
-}
-
-test_registry_api() {
-    local host="$1"
-    echo ""
-    echo "--- Registry API: $host ---"
-
-    # Try to query the registry API
-    response=$(curl -sf --max-time 10 "https://$host/v2/_catalog" 2>/dev/null) || true
-
-    if [ -n "$response" ]; then
-        echo "Response: $response"
-        repo_count=$(echo "$response" | jq -r '.repositories | length' 2>/dev/null) || repo_count="unknown"
-        echo "Repository count: $repo_count"
-        echo "Result: OK"
-        return 0
-    else
-        echo "Result: FAILED (no response from /v2/_catalog)"
-        return 1
-    fi
-}
-
-echo "========================================"
-echo "Testing DNS Resolution"
-echo "========================================"
-dns_ok=0
-test_dns "$FORGE_HOST" && dns_ok=$((dns_ok + 1)) || true
-echo ""
-test_dns "$REGISTRY_HOST" && dns_ok=$((dns_ok + 1)) || true
-
-echo ""
-echo "========================================"
-echo "Testing HTTPS Connectivity"
-echo "========================================"
-https_ok=0
-test_https "https://$FORGE_HOST" "Forgejo" && https_ok=$((https_ok + 1)) || true
-test_https "https://$REGISTRY_HOST/v2/" "Zot Registry" && https_ok=$((https_ok + 1)) || true
-
-echo ""
-echo "========================================"
-echo "Testing Registry API"
-echo "========================================"
-api_ok=0
-test_registry_api "$REGISTRY_HOST" && api_ok=1 || true
-
-echo ""
-echo "========================================"
-echo "Summary"
-echo "========================================"
-echo "DNS tests passed: $dns_ok/2"
-echo "HTTPS tests passed: $https_ok/2"
-echo "Registry API: $([ $api_ok -eq 1 ] && echo 'OK' || echo 'FAILED')"
-echo ""
-
-if [ "$dns_ok" -eq 2 ] && [ "$https_ok" -eq 2 ] && [ "$api_ok" -eq 1 ]; then
-    echo "OVERALL: ALL TESTS PASSED"
-    exit 0
-else
-    echo "OVERALL: SOME TESTS FAILED"
-    exit 1
-fi
diff --git a/docs/changelog.d/unify-container-workflows.infra.md b/docs/changelog.d/unify-container-workflows.infra.md
index 4c79798..2225297 100644
--- a/docs/changelog.d/unify-container-workflows.infra.md
+++ b/docs/changelog.d/unify-container-workflows.infra.md
@@ -1 +1 @@
-Unified Dockerfile and Nix container build workflows into a single workflow that auto-classifies containers by build type and routes to the correct runner (k8s for Dockerfile, nix-container-builder for Nix).
+Unified Dockerfile and Nix container build workflows into a single workflow that auto-classifies containers by build type and routes to the correct runner (k8s for Dockerfile, nix-container-builder for Nix). Removed nettest container (outgrown). Nix builds now require an explicit `version = "..."` declaration — no implicit nixpkgs fallback.
diff --git a/docs/how-to/deployment/build-container-image.md b/docs/how-to/deployment/build-container-image.md
index b3b9cbe..4b47b3f 100644
--- a/docs/how-to/deployment/build-container-image.md
+++ b/docs/how-to/deployment/build-container-image.md
@@ -117,7 +117,7 @@ Existing containers demonstrate several build approaches:
 | Multi-stage with Node + Go | [[#navidrome]] | Separate UI and backend build stages |
 | Multi-stage Elixir | [[#teslamate]] | Elixir release with Node assets |
 | Runtime tarball download | [[#kiwix-serve]] | Download pre-built binary with arch detection |
-| Nix `dockerTools` | [[#nettest-nix]] | `buildLayeredImage` with nixpkgs tools |
+| Nix `dockerTools` | [[#ntfy-nix]] | `buildLayeredImage` with nix-built app |
 
 ### transmission
 
@@ -139,9 +139,9 @@ Existing containers demonstrate several build approaches:
 
 `containers/kiwix-serve/Dockerfile` — Downloads a pre-built binary from upstream, with architecture detection for cross-platform support.
 
-### nettest (nix)
+### ntfy (nix)
 
-`containers/nettest/default.nix` — Uses `dockerTools.buildLayeredImage` with `buildEnv` to merge nixpkgs tools (curl, jq, dnsutils, bash). Runs alongside the existing Dockerfile; the nix variant is tagged `:version-nix` in the registry.
+`containers/ntfy/default.nix` — Builds ntfy from source using `buildGoModule` and packages it with `dockerTools.buildLayeredImage`. Runs alongside the existing Dockerfile; the nix variant is tagged `:version-nix` in the registry.
 
 ## Related
 
diff --git a/docs/how-to/zot/add-container-version-sync-check.md b/docs/how-to/zot/add-container-version-sync-check.md
index 7c98492..ebf1056 100644
--- a/docs/how-to/zot/add-container-version-sync-check.md
+++ b/docs/how-to/zot/add-container-version-sync-check.md
@@ -30,7 +30,7 @@ A typer-based uv-script that iterates over `containers/*/` and validates five ru
 
 Scoping: by default only checks containers changed vs main. `--all-files` checks everything. If `service-versions.yaml` itself changed, all containers are checked.
 
-Blacklisted containers (utility images, not tracked services): `kubectl`, `nettest`.
+Blacklisted containers (utility images, not tracked services): `kubectl`.
 
 Container-to-service name mapping: `quartz` → `docs`, `kiwix-serve` → `kiwix`.
 
diff --git a/docs/how-to/zot/add-dagger-nix-build.md b/docs/how-to/zot/add-dagger-nix-build.md
index 40841a8..fa5f261 100644
--- a/docs/how-to/zot/add-dagger-nix-build.md
+++ b/docs/how-to/zot/add-dagger-nix-build.md
@@ -15,7 +15,7 @@ Add Dagger functions for building nix container images and extracting version in
 
 ## Context
 
-Discovered during analysis of [[adopt-commit-based-container-tags]]: nix containers (authentik, ntfy, nettest) derive their bundled app version from the nixpkgs pin, not from an explicit declaration. To validate that a VERSION file matches the actual nix-built version, we need a way to query the version from nix.
+Discovered during analysis of [[adopt-commit-based-container-tags]]: nix containers (authentik, ntfy) derive their bundled app version from the nixpkgs pin, not from an explicit declaration. To validate that a VERSION file matches the actual nix-built version, we need a way to query the version from nix.
 
 Currently, nix containers can only be built on ringtail (the `nix-container-builder` runner). There is no local build path for developers — the only option is to push and wait for CI. Adding a Dagger-based nix build gives both local evaluation and version extraction.
 
@@ -84,7 +84,7 @@ The `flake_lock` function already demonstrates running nix inside Dagger using `
 
 ## Verification
 
-- [ ] `dagger call build-nix --src=. --container-name=nettest` produces a valid docker-archive tarball
+- [ ] `dagger call build-nix --src=. --container-name=ntfy` produces a valid docker-archive tarball
 - [ ] `dagger call nix-version --src=. --package=ntfy-sh` returns the correct version string
 - [ ] `dagger call nix-version --src=. --package=authentik` returns the Authentik version
 - [ ] Tarball from `build-nix` can be loaded with `docker load` and run locally
diff --git a/docs/how-to/zot/pin-container-versions.md b/docs/how-to/zot/pin-container-versions.md
index 714523c..4d0a64c 100644
--- a/docs/how-to/zot/pin-container-versions.md
+++ b/docs/how-to/zot/pin-container-versions.md
@@ -29,7 +29,6 @@ Specific changes:
 - **devpi**: Pinned devpi-server==6.19.1 and devpi-web==5.0.1
 - **cv**: `CONTAINER_APP_VERSION=1.0.3` (matches latest Forgejo package release)
 - **quartz**: `CONTAINER_APP_VERSION=1.28.2` (pinned nginx:1.28.2-alpine base)
-- **nettest**: `CONTAINER_APP_VERSION=0.1.0` (internal, no upstream)
 - **All others**: Existing versions carried forward with new uniform ARG pattern
 
 ## Key Files
diff --git a/docs/reference/tools/dagger.md b/docs/reference/tools/dagger.md
index 5d8a46d..b07ed78 100644
--- a/docs/reference/tools/dagger.md
+++ b/docs/reference/tools/dagger.md
@@ -49,7 +49,7 @@ dagger call --interactive build --src=. --container-name=devpi
 dagger call publish --src=. --container-name=devpi --version=v1.1.0
 
 # Build a nix container (no local nix required)
-dagger call build-nix --src=. --container-name=nettest export --path=./nettest.tar.gz
+dagger call build-nix --src=. --container-name=ntfy export --path=./ntfy.tar.gz
 
 # Check a nixpkgs package version
 dagger call nix-version --package=authentik
diff --git a/mise-tasks/container-version-check b/mise-tasks/container-version-check
index 29be3ab..87eed64 100755
--- a/mise-tasks/container-version-check
+++ b/mise-tasks/container-version-check
@@ -37,7 +37,7 @@ CONTAINERS_DIR = REPO_ROOT / "containers"
 SERVICE_VERSIONS_FILE = REPO_ROOT / "service-versions.yaml"
 
 # Containers that are utility/test images, not tracked services
-BLACKLIST = {"kubectl", "nettest"}
+BLACKLIST = {"kubectl"}
 
 # Container dir name → service-versions.yaml name (when they differ)
 CONTAINER_TO_SERVICE = {