dockerfile changes

go/samples/http/Dockerfile

@@ -1,25 +1,16 @@
-# Build Stage
 # First pull Golang image
-FROM golang:1.19-alpine as build-env
+FROM golang:1.19-alpine
 
 ENV APP_NAME sqlcommenter-http
-ENV CMD_PATH main.go
-
-# Copy application data into image
-COPY . $GOPATH/src/$APP_NAME
+
+# Set workdir
 WORKDIR $GOPATH/src/$APP_NAME
+
+# Copy application data into image
+COPY . .
 
 # Budild application
-RUN CGO_ENABLED=0 go build -v -o /$APP_NAME $GOPATH/src/$APP_NAME/$CMD_PATH
-
-# Run Stage
-FROM alpine:3.16.3
-
-# Set environment variable
-ENV APP_NAME sqlcommenter-http
-
-# Copy only required data into this image
-COPY --from=build-env /$APP_NAME .
+RUN CGO_ENABLED=0 go build -v
 
 # Expose application port
 EXPOSE 8081