feat: expand env for viper

.devcontainer/Dockerfile

@@ -0,0 +1,57 @@
+FROM ubuntu:24.04
+
+# Umgebungsvariablen setzen
+ENV DEBIAN_FRONTEND=noninteractive
+ENV TZ=Europe/Berlin
+
+# System-Updates und grundlegende Tools installieren
+RUN apt-get update && apt-get install -y \
+    curl \
+    wget \
+    git \
+    unzip \
+    software-properties-common \
+    apt-transport-https \
+    ca-certificates \
+    gnupg \
+    lsb-release \
+    vim \
+    nano \
+    tree \
+    htop \
+    sudo \
+    make \
+    && apt-get clean \
+    && rm -rf /var/lib/apt/lists/*
+
+# Zeitzone konfigurieren
+RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
+
+# Erstelle einen non-root Benutzer
+ARG USERNAME=vscode
+ARG USER_UID=1001
+ARG USER_GID=$USER_UID
+RUN groupadd --gid $USER_GID $USERNAME \
+    && useradd --uid $USER_UID --gid $USER_GID -m $USERNAME \
+    && echo $USERNAME ALL=\(root\) NOPASSWD:ALL > /etc/sudoers.d/$USERNAME \
+    && chmod 0440 /etc/sudoers.d/$USERNAME
+
+# Shared bin Verzeichnis erstellen und Rechte setzen
+RUN mkdir -p /shared/bin && chown -R $USERNAME:$USERNAME /shared/bin
+
+# Arbeitsverzeichnis setzen
+WORKDIR /workspace/plexams.go
+
+# Benutzer wechseln
+USER $USERNAME
+
+# # Delve Debugger installieren
+# RUN /usr/local/go/bin/go install github.com/go-delve/delve/cmd/dlv@latest
+# ENV PATH="/home/vscode/go/bin:$PATH"
+
+# Set GOBIN to shared volume
+ENV GOBIN=/shared/bin
+ENV PATH="${PATH}:/shared/bin"
+
+# Standard-Befehl
+CMD ["/bin/bash"]

.devcontainer/devcontainer.json

@@ -0,0 +1,74 @@
+{
+  "name": "plexams-go",
+  "build": {
+    "dockerfile": "Dockerfile"
+  },
+
+  "features": {
+    "ghcr.io/devcontainers/features/go:1": {
+      "version": "1.25.1"
+    }
+  },
+
+  "customizations": {
+    "vscode": {
+      "extensions": [
+        "golang.Go",
+        "eamodio.gitlens",
+        "gruntfuggly.todo-tree",
+        "oderwat.indent-rainbow",
+        "pkief.material-icon-theme"
+      ],
+      "settings": {
+        "go.useLanguageServer": true,
+        "go.lintTool": "golangci-lint-v2",
+        "go.lintFlags": ["--path-mode=abs", "--fast-only"],
+        "go.formatTool": "custom",
+        "go.alternateTools": {
+          "customFormatter": "golangci-lint-v2"
+        },
+        "go.formatFlags": ["fmt", "--stdin"],
+        "go.testOnSave": true,
+        "editor.formatOnSave": true,
+        "editor.tabSize": 4,
+        "editor.insertSpaces": true,
+        "editor.detectIndentation": true,
+        "editor.rulers": [80, 120],
+        "files.exclude": {
+          "**/.git": true,
+          "**/.svn": true,
+          "**/.hg": true,
+          "**/CVS": true,
+          "**/.DS_Store": true
+        },
+        "terminal.integrated.defaultProfile.linux": "bash",
+        "terminal.integrated.cwd": "${workspaceFolder}"
+      }
+    }
+  },
+
+  "mounts": [
+    "source=shared-binaries,target=/shared/bin,type=volume",
+    "source=${localEnv:HOME}/.gitconfig,target=/home/vscode/.gitconfig,type=bind,consistency=cached",
+    "source=${localEnv:HOME}/.ssh,target=/home/vscode/.ssh,type=bind,consistency=cached",
+    "source=${localEnv:HOME}/.plexams.yml,target=/home/vscode/.plexams.yml,type=bind,consistency=cached",
+    "source=${localEnv:HOME}/semester,target=/home/vscode/semester,type=bind,consistency=cached"
+  ],
+
+  "forwardPorts": [8080, 8081, 8082],
+  "portsAttributes": {
+    "8080": {
+      "label": "Application",
+      "onAutoForward": "notify"
+    }
+  },
+
+  "postCreateCommand": "sudo chown -R vscode:vscode /shared/bin && go mod download",
+
+  "remoteEnv": {
+    "GOBIN": "/shared/bin",
+    "PATH": "${containerEnv:PATH}:/shared/bin"
+  },
+
+  "runArgs": ["--network=host"]
+}

cmd/root.go

@@ -3,6 +3,7 @@ package cmd
 import (
 	"fmt"
 	"os"
+	"path/filepath"
 	"strings"
 
 	"github.com/mitchellh/go-homedir"
@@ -78,7 +79,10 @@ func initConfig() {
 		if semester == "" {
 			semester = viper.GetString("semester")
 		}
-		viper.AddConfigPath(fmt.Sprintf("%s/%s", viper.GetString("semester-path"), semester))
+		p := viper.GetString("semester-path")
+		p = os.ExpandEnv(p)      // $HOME, $USER, ...
+		p, _ = homedir.Expand(p) // ~ und ~user
+		viper.AddConfigPath(filepath.Join(p, semester))
 		viper.SetConfigName("plexams")
 		err = viper.MergeInConfig()
 		if err != nil {