Update Dockerfile

Dockerfile

@@ -1,18 +1,23 @@
+# Use an official golang runtime as a parent image
 FROM golang:1.21
 
-WORKDIR /usr/src/app
-# Copy the local package files to the container's workspace.
-ADD . /app
+# Set the working directory in the container to /app
+WORKDIR /app
 
-# Download and install the chisel package
-RUN go get -v github.com/jpillora/chisel
-RUN go install github.com/jpillora/chisel@latest
+# Copy go.mod and go.sum files to the workspace
+COPY go.mod go.sum ./
+
+# Download all dependencies. They will be cached if the go.mod and go.sum files are not changed
+RUN go mod download
+
+# Copy the source code into the container
+COPY . .
+
+# Build the application
+RUN go build -o /usr/local/bin/chisel github.com/jpillora/chisel
 
 # Expose port 8080 for the chisel server
 EXPOSE 8080
 
-# Run the chisel command when the container starts.
-ENTRYPOINT ["chisel"]
-
-# Set default arguments for chisel
-CMD ["server", "--port", "8080"]
+# Command to run the executable
+CMD ["chisel", "server", "--port", "8080"]