chore: reorganize Docker build workflow and enhance build arguments for versioning

Dockerfile

@@ -1,10 +1,22 @@
 FROM golang:alpine AS builder
 
+ARG VERSION="dev"
+ARG GiTCommit="Unknown"
+ARG BuildTime="Unknown"
+
 WORKDIR /app
 
 COPY . .
 
-RUN CGO_ENABLED=0 GOOS=linux go build -ldflags="-s -w -X github.com/krau/SaveAny-Bot/common.Version=Docker" -o saveany-bot .
+RUN --mount=type=cache,target=/root/.cache/go-build \
+    --mount=type=cache,target=/go/pkg \
+    CGO_ENABLED=0 \ 
+    go build -trimpath \ 
+    -ldflags "-s -w \ 
+    -X github.com/krau/SaveAny-Bot/common.Version=${VERSION} \
+    -X github.com/krau/SaveAny-Bot/common.GitCommit=${GiTCommit} \
+    -X github.com/krau/SaveAny-Bot/common.BuildTime=${BuildTime}" \
+    -o saveany-bot .
 
 FROM alpine:latest