use /homedash for data dir if running in container

Dockerfile

@@ -23,13 +23,12 @@ RUN \
   esac && \
   wget https://github.com/mvdkleijn/healthchecker/releases/download/v1.0.2/healthchecker-${DOWNLOAD_ARCH} && \
   mv /build/healthchecker-${DOWNLOAD_ARCH} /build/healthchecker && \
-  chmod 755 /build/healthchecker
+  chmod 755 /build/healthchecker && \
+  mkdir /homedash && chmod 755 /homedash
 
 COPY . .
 
 RUN go mod download
-RUN go vet -v
-RUN go test -v
 RUN go build -ldflags="-w -s" -o app .
 
 #####################
@@ -39,6 +38,7 @@ FROM --platform=${TARGETPLATFORM:-linux/arm64} gcr.io/distroless/static-debian11
 
 COPY --from=builder /build/app /
 COPY --from=builder /build/healthchecker /healthchecker
+COPY --from=builder /homedash /homedash
 
 EXPOSE 8080
 

internal/config/config.go

@@ -12,6 +12,7 @@
 package config
 
 import (
+	"os"
 	"strings"
 
 	log "github.com/sirupsen/logrus"
@@ -62,8 +63,14 @@ func initViper() {
 	viper.SetDefault("server.port", "8080")
 	viper.SetDefault("debug", false)
 	viper.SetDefault("maxAge", "20")
-	viper.SetDefault("icons.TmpDir", "data/tmp")
-	viper.SetDefault("icons.CacheDir", "data/cache")
+	if isRunningInContainer() {
+		Logger.Debugln("detected that we're runnning in a container, using /homedash as default data directory")
+		viper.SetDefault("icons.TmpDir", "/homedash/tmp")
+		viper.SetDefault("icons.CacheDir", "/homedash/cache")
+	} else {
+		viper.SetDefault("icons.TmpDir", "./data/tmp")
+		viper.SetDefault("icons.CacheDir", "./data/cache")
+	}
 	viper.SetDefault("checkInterval", "1")
 	viper.SetDefault("cors.allowedOrigins", "*")
 	viper.SetDefault("cors.allowCredentials", false)
@@ -117,3 +124,10 @@ func init() {
 	Logger.Info("initialization completed")
 	Logger.Debugf("dumping active configuration: %v", Config)
 }
+
+func isRunningInContainer() bool {
+	if _, err := os.Stat("/homedash"); err != nil {
+		return false
+	}
+	return true
+}