Go1.12 (#2)

golang 1.12

Author: lotharschulz

.circleci/config.yml

@@ -26,7 +26,7 @@ jobs:
       - run:
           name: docker pull golang & alpine base image
           command: |
-            docker pull golang:1.11
+            docker pull golang:1.12
       - run:
           name: docker command build
           command: |
@@ -42,7 +42,7 @@ jobs:
       - run:
           name: docker pull golang
           command: |
-            docker pull golang:1.11
+            docker pull golang:1.12
       - run:
           name: build.docker
           command: |
@@ -63,7 +63,7 @@ jobs:
       - run:
           name: docker pull golang & alpine base image
           command: |
-            docker pull golang:1.11
+            docker pull golang:1.12
             docker pull alpine:latest
       - run:
           name: build.docker-cache
@@ -86,7 +86,7 @@ jobs:
       - run:
           name: docker pull golang & alpine base image
           command: |
-            docker pull golang:1.11
+            docker pull golang:1.12
             docker pull alpine:latest
       - run:
           name: build.dockerbuilder
@@ -107,7 +107,7 @@ jobs:
       - run:
           name: docker pull golang & alpine base image
           command: |
-            docker pull golang:1.11
+            docker pull golang:1.12
             docker pull alpine:latest
       - run:
           name: build.dockerbuilder-cache
@@ -146,7 +146,7 @@ jobs:
       - run:
           name: docker pull golang & alpine base image
           command: |
-            docker pull golang:1.11
+            docker pull golang:1.12
             docker pull alpine:latest
       - run:
           name: build.dockerbuilder-squash
@@ -167,7 +167,7 @@ jobs:
       - run:
           name: docker pull golang & alpine base image
           command: |
-            docker pull golang:1.11
+            docker pull golang:1.12
             docker pull alpine:latest
       - run:
           name: build.dockerbuilder-compress
@@ -189,7 +189,7 @@ jobs:
       - run:
           name: docker pull golang & alpine base image
           command: |
-            docker pull golang:1.11
+            docker pull golang:1.12
             docker pull alpine:latest
       - run:
           name: build.dockeralpine
@@ -210,7 +210,7 @@ jobs:
       - run:
           name: docker pull golang & alpine base image
           command: |
-            docker pull golang:1.11
+            docker pull golang:1.12
             docker pull alpine:latest
       - run:
           name: build.dockeralpine-cache
@@ -247,7 +247,7 @@ jobs:
       - run:
           name: docker pull golang & alpine base image
           command: |
-            docker pull golang:1.11
+            docker pull golang:1.12
             docker pull alpine:latest
       - run:
           name: build.dockeralpine-squash
@@ -268,7 +268,7 @@ jobs:
       - run:
           name: docker pull golang & alpine base image
           command: |
-            docker pull golang:1.11
+            docker pull golang:1.12
             docker pull alpine:latest
       - run:
           name: build.dockeralpine-compress

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.11
+FROM golang:1.12
 
 RUN mkdir /app
 WORKDIR /app

DockerfileBuilder

@@ -1,4 +1,4 @@
-FROM golang:1.11 as builder
+FROM golang:1.12 as builder
 
 WORKDIR /go/src/github.com/lotharschulz/hellogodocker/
 

Makefile

@@ -66,7 +66,7 @@ build.docker: build
 
 # builds the docker image  with cache, depends on build
 build.docker-cache: build
-	docker build --cache-from golang:1.11 -t $(DOCKER_IMAGE) -f $(DOCKERFILE) $(DOCKERFILE_FOLDER)
+	docker build --cache-from golang:1.12 -t $(DOCKER_IMAGE) -f $(DOCKERFILE) $(DOCKERFILE_FOLDER)
 
 # builder ###########
 # builds the docker builder image, depends on build
@@ -75,7 +75,7 @@ build.dockerbuilder: build
 
 # builds the docker builder image with cache, depends on build
 build.dockerbuilder-cache: build
-	docker build --cache-from golang:1.11 --cache-from alpine:latest -t $(DOCKER_IMAGE) -f $(DOCKERFILEBUILDER) $(DOCKERFILE_FOLDER)
+	docker build --cache-from golang:1.12 --cache-from alpine:latest -t $(DOCKER_IMAGE) -f $(DOCKERFILEBUILDER) $(DOCKERFILE_FOLDER)
 
 # builds the docker builder image without cache, depends on build
 build.dockerbuilder-nocache: build

README.md

@@ -24,18 +24,19 @@ go build -o mybinary -v ./...
 
 ```
 
-#### 5 ways to build a docker image
+#### 6 main ways to build a docker image
 ```
 $ make build.docker
 $ make build.docker-cache
 $ make build.dockerbuilder
 $ make build.dockerbuilder-cache
-$ make build.dockerbuilder-min
+$ make build.dockeralpine
+$ make build.docker-min
 ```
 
 ###### note about ca-certificates
 ```
-# $ make build.dockerbuilder-min
+# $ make build.docker-min
 # requires ca-certificates.crt file in project directory
 # For many Linux distributions, 
 # you can copy the file from /etc/ssl/certs/ca-certificates.crt :
@@ -67,6 +68,7 @@ $ sudo service docker restart
 $ docker version -f '{{.Server.Experimental}}'
 true
 ```
+_Docker on Mac OS offers to set this via UI as well. That would be Preferences->Daemon->Advanced._
 
 #### blog post
-[let’s go build a minimal docker image](https://www.lotharschulz.info/2018/10/01/lets-go-build-a-minimal-docker-image/)
+[let’s go build a minimal docker image](https://www.lotharschulz.info/2018/10/01/lets-go-build-a-minimal-docker-image/)