postfinance · durdekm · Jul 30, 2026 · Jul 29, 2026 · Jul 29, 2026 · Jul 29, 2026
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
@@ -52,6 +52,22 @@ jobs:
             exit 1
           fi
 
+  # run unit tests
+  unit-tests:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6
+
+      - uses: actions/setup-go@v6
+        with:
+          go-version: ${{ env.GO_VERSION }}
+
+      - name: Run unit tests
+        run: go test -run '' builder/installer
+
   # Build Job
   build:
     needs: verify-readme-files

diff --git a/.vscode/launch.json b/.vscode/launch.json
@@ -0,0 +1,94 @@
+{
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "name": "Debug kubectl installer (all defaults)",
+      "type": "go",
+      "request": "launch",
+      "mode": "auto",
+      "program": "${workspaceFolder}/features/src/kubectl",
+      "cwd": "${workspaceFolder}",
+      "args": [
+        "-version=latest",
+        "-kubectxVersion=latest",
+        "-kubensVersion=latest",
+        "-k9sVersion=none",
+        "-helmVersion=none",
+        "-kustomizeVersion=none",
+        "-kubeconformVersion=none",
+        "-kubescoreVersion=none",
+        "-downloadUrl=",
+        "-kubectxDownloadUrl=",
+        "-kubensDownloadUrl=",
+        "-k9sDownloadUrl=",
+        "-helmDownloadUrl=",
+        "-kustomizeDownloadUrl=",
+        "-kubeconformDownloadUrl=",
+        "-kubescoreDownloadUrl="
+      ]
+    },
+    {
+      "name": "Debug kubectl installer (all defaults and token)",
+      "type": "go",
+      "request": "launch",
+      "mode": "auto",
+      "program": "${workspaceFolder}/features/src/kubectl",
+      "cwd": "${workspaceFolder}",
+      "args": [
+        "-version=latest",
+        "-kubectxVersion=latest",
+        "-kubensVersion=latest",
+        "-k9sVersion=none",
+        "-helmVersion=none",
+        "-kustomizeVersion=none",
+        "-kubeconformVersion=none",
+        "-kubescoreVersion=none",
+        "-downloadUrl=",
+        "-kubectxDownloadUrl=",
+        "-kubensDownloadUrl=",
+        "-k9sDownloadUrl=",
+        "-helmDownloadUrl=",
+        "-kustomizeDownloadUrl=",
+        "-kubeconformDownloadUrl=",
+        "-kubescoreDownloadUrl="
+      ],
+      "env": {
+        "DEV_FEATURE_TOKEN_GITHUB_API": "<github_api_token>"
+      }
+    },
+    {
+      "name": "Debug kubectl installer (pinned versions)",
+      "type": "go",
+      "request": "launch",
+      "mode": "auto",
+      "program": "${workspaceFolder}/features/src/kubectl",
+      "cwd": "${workspaceFolder}",
+      "args": [
+        "-version=1.31.2",
+        "-kubectxVersion=0.9.5",
+        "-kubensVersion=0.9.5",
+        "-k9sVersion=0.32.5",
+        "-helmVersion=3.16.2",
+        "-kustomizeVersion=5.4.2",
+        "-kubeconformVersion=0.6.6",
+        "-kubescoreVersion=1.18.0",
+        "-downloadUrl=",
+        "-kubectxDownloadUrl=",
+        "-kubensDownloadUrl=",
+        "-k9sDownloadUrl=",
+        "-helmDownloadUrl=",
+        "-kustomizeDownloadUrl=",
+        "-kubeconformDownloadUrl=",
+        "-kubescoreDownloadUrl="
+      ]
+    },
+    {
+      "name": "Debug current Go file",
+      "type": "go",
+      "request": "launch",
+      "mode": "auto",
+      "program": "${file}",
+      "cwd": "${workspaceFolder}"
+    }
+  ]
+}
diff --git a/README.md b/README.md
@@ -156,6 +156,26 @@ and then run the installer:
 /data/kubectl.bin --version=1.35.0
 ```
 
+If you are running this command inside a devcontainer (for example via docker-out), note that bind mount source paths are resolved by the Docker daemon host, not by the devcontainer filesystem. If the mounted folder looks empty in the second container, use a host-valid absolute path or use `docker cp` as a fallback.
+
+Quick troubleshooting check (replace `<host-path>` with the path you want to mount):
+```bash
+docker run --rm -v <host-path>:/data debian ls -la /data
+```
+
+Fallback example using `docker cp`:
+```bash
+cid=$(docker create -it debian /bin/bash)
+docker cp ./kubectl.bin $cid:/data/kubectl.bin
+docker start -ai $cid
+```
+
+Inside the container:
+```bash
+ls -l /data
+/data/kubectl.bin --version=1.35.0
+```
+
 Alternatively, you can just pack a feature (use the tasks from `build/build.go`) and simply extract it into a `.devcontainer` folder and then use it from there as a local feature (`.my-feature {}`).
 
 Here is a one-liner that prepares the defined feature in this project:

diff --git a/features/src/apm/README.md b/features/src/apm/README.md
@@ -6,7 +6,7 @@ Installs APM (Agent Package Manager).
 
 ```json
 "features": {
-    "ghcr.io/postfinance/devcontainer-features/apm:1.0.0": {
+    "ghcr.io/postfinance/devcontainer-features/apm:1.1.0": {
         "version": "latest",
         "downloadUrl": ""
     }

diff --git a/features/src/apm/devcontainer-feature.json b/features/src/apm/devcontainer-feature.json
@@ -1,6 +1,6 @@
 {
     "id": "apm",
-    "version": "1.0.0",
+    "version": "1.1.0",
     "name": "APM (Agent Package Manager)",
     "description": "Installs APM (Agent Package Manager).",
     "options": {

diff --git a/features/src/claude-code/README.md b/features/src/claude-code/README.md
@@ -6,7 +6,7 @@ Installs Claude Code, Anthropic's AI coding assistant CLI.
 
 ```json
 "features": {
-    "ghcr.io/postfinance/devcontainer-features/claude-code:1.0.0": {
+    "ghcr.io/postfinance/devcontainer-features/claude-code:1.1.0": {
         "version": "latest",
         "downloadUrl": ""
     }

diff --git a/features/src/claude-code/devcontainer-feature.json b/features/src/claude-code/devcontainer-feature.json
@@ -1,6 +1,6 @@
 {
     "id": "claude-code",
-    "version": "1.0.0",
+    "version": "1.1.0",
     "name": "claude-code",
     "description": "Installs Claude Code, Anthropic's AI coding assistant CLI.",
     "options": {

diff --git a/features/src/docker-out/README.md b/features/src/docker-out/README.md
@@ -6,7 +6,7 @@ Installs a Docker client which re-uses the host Docker socket.
 
 ```json
 "features": {
-    "ghcr.io/postfinance/devcontainer-features/docker-out:1.0.0": {
+    "ghcr.io/postfinance/devcontainer-features/docker-out:1.1.0": {
         "version": "latest",
         "composeVersion": "latest",
         "buildxVersion": "latest",

diff --git a/features/src/docker-out/devcontainer-feature.json b/features/src/docker-out/devcontainer-feature.json
@@ -1,6 +1,6 @@
 {
     "id": "docker-out",
-    "version": "1.0.0",
+    "version": "1.1.0",
     "name": "Docker outside Docker",
     "description": "Installs a Docker client which re-uses the host Docker socket.",
     "options": {

diff --git a/features/src/git-lfs/README.md b/features/src/git-lfs/README.md
@@ -6,7 +6,7 @@ Installs Git LFS.
 
 ```json
 "features": {
-    "ghcr.io/postfinance/devcontainer-features/git-lfs:1.0.1": {
+    "ghcr.io/postfinance/devcontainer-features/git-lfs:1.1.0": {
         "version": "latest",
         "downloadUrl": ""
     }

diff --git a/features/src/git-lfs/devcontainer-feature.json b/features/src/git-lfs/devcontainer-feature.json
@@ -1,6 +1,6 @@
 {
     "id": "git-lfs",
-    "version": "1.0.1",
+    "version": "1.1.0",
     "name": "Git LFS",
     "description": "Installs Git LFS.",
     "options": {

diff --git a/features/src/github-cli/README.md b/features/src/github-cli/README.md
@@ -6,7 +6,7 @@ Installs the GitHub CLI.
 
 ```json
 "features": {
-    "ghcr.io/postfinance/devcontainer-features/github-cli:1.0.0": {
+    "ghcr.io/postfinance/devcontainer-features/github-cli:1.1.0": {
         "version": "latest",
         "downloadUrl": ""
     }

diff --git a/features/src/github-cli/devcontainer-feature.json b/features/src/github-cli/devcontainer-feature.json
@@ -1,6 +1,6 @@
 {
     "id": "github-cli",
-    "version": "1.0.0",
+    "version": "1.1.0",
     "name": "GitHub CLI",
     "description": "Installs the GitHub CLI.",
     "options": {

diff --git a/features/src/github-copilot-cli/README.md b/features/src/github-copilot-cli/README.md
@@ -6,7 +6,7 @@ Installs GitHub Copilot CLI (copilot), the AI-powered coding assistant for the t
 
 ```json
 "features": {
-    "ghcr.io/postfinance/devcontainer-features/github-copilot-cli:1.0.0": {
+    "ghcr.io/postfinance/devcontainer-features/github-copilot-cli:1.1.0": {
         "version": "latest",
         "downloadUrl": ""
     }

diff --git a/features/src/github-copilot-cli/devcontainer-feature.json b/features/src/github-copilot-cli/devcontainer-feature.json
@@ -1,6 +1,6 @@
 {
     "id": "github-copilot-cli",
-    "version": "1.0.0",
+    "version": "1.1.0",
     "name": "GitHub Copilot CLI",
     "description": "Installs GitHub Copilot CLI (copilot), the AI-powered coding assistant for the terminal.",
     "options": {

diff --git a/features/src/gonovate/README.md b/features/src/gonovate/README.md
@@ -6,7 +6,7 @@ Installs Gonovate.
 
 ```json
 "features": {
-    "ghcr.io/postfinance/devcontainer-features/gonovate:1.0.0": {
+    "ghcr.io/postfinance/devcontainer-features/gonovate:1.1.0": {
         "version": "latest",
         "downloadUrl": ""
     }

diff --git a/features/src/gonovate/devcontainer-feature.json b/features/src/gonovate/devcontainer-feature.json
@@ -1,6 +1,6 @@
 {
     "id": "gonovate",
-    "version": "1.0.0",
+    "version": "1.1.0",
     "name": "Gonovate",
     "description": "Installs Gonovate.",
     "options": {

diff --git a/features/src/goreleaser/README.md b/features/src/goreleaser/README.md
@@ -6,7 +6,7 @@ Installs GoReleaser.
 
 ```json
 "features": {
-    "ghcr.io/postfinance/devcontainer-features/goreleaser:1.0.0": {
+    "ghcr.io/postfinance/devcontainer-features/goreleaser:1.1.0": {
         "version": "latest",
         "downloadUrl": ""
     }

diff --git a/features/src/goreleaser/devcontainer-feature.json b/features/src/goreleaser/devcontainer-feature.json
@@ -1,6 +1,6 @@
 {
     "id": "goreleaser",
-    "version": "1.0.0",
+    "version": "1.1.0",
     "name": "GoReleaser",
     "description": "Installs GoReleaser.",
     "options": {

diff --git a/features/src/kubectl/README.md b/features/src/kubectl/README.md
@@ -6,7 +6,7 @@ Installs kubectl and other tools for managing kubernetes.
 
 ```json
 "features": {
-    "ghcr.io/postfinance/devcontainer-features/kubectl:1.0.0": {
+    "ghcr.io/postfinance/devcontainer-features/kubectl:1.1.0": {
         "version": "latest",
         "kubectxVersion": "latest",
         "kubensVersion": "latest",

diff --git a/features/src/kubectl/devcontainer-feature.json b/features/src/kubectl/devcontainer-feature.json
@@ -1,6 +1,6 @@
 {
     "id": "kubectl",
-    "version": "1.0.0",
+    "version": "1.1.0",
     "name": "kubectl",
     "description": "Installs kubectl and other tools for managing kubernetes.",
     "options": {

diff --git a/features/src/opencode/README.md b/features/src/opencode/README.md
@@ -6,7 +6,7 @@ Installs opencode, the open source AI coding agent.
 
 ```json
 "features": {
-    "ghcr.io/postfinance/devcontainer-features/opencode:1.0.0": {
+    "ghcr.io/postfinance/devcontainer-features/opencode:1.1.0": {
         "version": "latest",
         "downloadUrl": ""
     }

diff --git a/features/src/opencode/devcontainer-feature.json b/features/src/opencode/devcontainer-feature.json
@@ -1,6 +1,6 @@
 {
     "id": "opencode",
-    "version": "1.0.0",
+    "version": "1.1.0",
     "name": "opencode",
     "description": "Installs opencode, the open source AI coding agent.",
     "options": {

diff --git a/features/src/python/README.md b/features/src/python/README.md
@@ -6,7 +6,7 @@ Installs Python.
 
 ```json
 "features": {
-    "ghcr.io/postfinance/devcontainer-features/python:1.0.0": {
+    "ghcr.io/postfinance/devcontainer-features/python:1.1.0": {
         "version": "latest",
         "downloadUrl": "",
         "pipIndex": "",

diff --git a/features/src/python/devcontainer-feature.json b/features/src/python/devcontainer-feature.json
@@ -1,6 +1,6 @@
 {
     "id": "python",
-    "version": "1.0.0",
+    "version": "1.1.0",
     "name": "Python",
     "description": "Installs Python.",
     "options": {

diff --git a/features/src/rust/README.md b/features/src/rust/README.md
@@ -6,7 +6,7 @@ A package which installs Rust, common Rust utilities and their required dependen
 
 ```json
 "features": {
-    "ghcr.io/postfinance/devcontainer-features/rust:1.0.0": {
+    "ghcr.io/postfinance/devcontainer-features/rust:1.1.0": {
         "version": "latest",
         "rustupVersion": "latest",
         "profile": "minimal",

diff --git a/features/src/rust/devcontainer-feature.json b/features/src/rust/devcontainer-feature.json
@@ -1,6 +1,6 @@
 {
     "id": "rust",
-    "version": "1.0.0",
+    "version": "1.1.0",
     "name": "Rust",
     "description": "A package which installs Rust, common Rust utilities and their required dependencies.",
     "options": {

diff --git a/features/src/sonar-scanner-cli/README.md b/features/src/sonar-scanner-cli/README.md
@@ -6,7 +6,7 @@ Installs the SonarScanner CLI.
 
 ```json
 "features": {
-    "ghcr.io/postfinance/devcontainer-features/sonar-scanner-cli:1.0.0": {
+    "ghcr.io/postfinance/devcontainer-features/sonar-scanner-cli:1.1.0": {
         "version": "latest",
         "includeJre": true,
         "downloadUrl": ""

diff --git a/features/src/sonar-scanner-cli/devcontainer-feature.json b/features/src/sonar-scanner-cli/devcontainer-feature.json
@@ -1,6 +1,6 @@
 {
     "id": "sonar-scanner-cli",
-    "version": "1.0.0",
+    "version": "1.1.0",
     "name": "SonarScanner CLI",
     "description": "Installs the SonarScanner CLI.",
     "options": {