Fixed a bug in the Dockerfile with respect to the location of the dropreplace for ejr/feedkit.

Dockerfile

@@ -16,13 +16,15 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 
 # Cache dependencies first
 COPY go.mod go.sum ./
-RUN go mod edit -dropreplace gitea.maximumdirect.net/ejr/feedkit
 RUN --mount=type=cache,target=/go/pkg/mod \
     go mod download
 
 # Copy the rest of the source
 COPY . .
 
+# Remove local dev replaces that don't exist in container context
+RUN go mod edit -dropreplace gitea.maximumdirect.net/ejr/feedkit
+
 # Default to a static build (no CGO)
 # If errors, can build with: --build-arg CGO_ENABLED=1
 ARG CGO_ENABLED=0