rename Dockerfile and copy all files

.gitea/workflows/release-tag.yml

@@ -27,4 +27,4 @@ jobs:
           registry: git.kocoder.xyz
           username: ${{ secrets.CI_RUNNER_USER }}
           password: ${{ secrets.CI_RUNNER_TOKEN }}
-          build_file: DOCKERFILE
+          build_file: Dockerfile

Dockerfile

@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1
 
-FROM golang:1.21.0
+FROM golang:1.23.0
 
 # Set destination for COPY
 WORKDIR /app
@@ -11,7 +11,7 @@ RUN go mod download
 
 # Copy the source code. Note the slash at the end, as explained in
 # https://docs.docker.com/engine/reference/builder/#copy
-COPY *.go ./
+COPY ./ ./
 
 # Build
 RUN CGO_ENABLED=0 GOOS=linux go build -o /szuntis-backend