[NOD-95] Added docker file and scripts to run dev instances for debugging (#241)

* [NOD-95] Added docker file and scripts to run dev instances for debugging

* [NOD-95] Enabled debugging from dockers

* [NOD-95] Removed redundant entrypoint.sh file

* [NOD-95] Removed multi-stage build artifacts from Dockerfile.dev

* [NOD-95] Add --help to run-dev.sh

docker/Dockerfile.dev

@@ -0,0 +1,25 @@
+FROM golang:1.12-alpine 
+
+ENV PATH="${GOPATH}/bin:${PATH}"
+
+RUN mkdir -p /go/src/github.com/daglabs/btcd
+
+WORKDIR /go/src/github.com/daglabs/btcd
+
+RUN apk add --no-cache curl git openssh binutils gcc musl-dev tini bash
+# Allow delve to run on Alpine based containers.
+RUN apk add --no-cache libc6-compat
+
+RUN curl https://raw.githubusercontent.com/golang/dep/master/install.sh | sh
+
+RUN go get github.com/derekparker/delve/cmd/dlv
+
+COPY ./Gopkg.* ./
+
+RUN dep ensure -v -vendor-only
+
+COPY . .
+
+RUN CGO_ENABLED=0 GOOS=linux go build -gcflags "all=-N -l" -a -installsuffix cgo -o btcd .
+
+ENTRYPOINT [ "/sbin/tini", "--" ]

docker/docker-compose.yml

@@ -1,26 +1,71 @@
 version: '3'
 services:
   first:
-    image: 956501169541.dkr.ecr.us-east-1.amazonaws.com/btcd:latest
+    image: btcd:latest
+    security_opt: 
+      - apparmor=unconfined
+    cap_add:
+      - SYS_PTRACE
     command: [
-      "btcd",
+      "./btcd",
       "--testnet",
       "--addrindex",
-      "--generate",
+      # "--generate",
+      "--nodnsseed",
       "--miningaddr=dagtest:qrm4zaetvny2yuh4wudf8y43fd20lunkxs8quragg8",
       "--rpcuser=user",
       "--rpcpass=pass",
       "--rpclisten=0.0.0.0:18334",
-      "--rpccert=docker/rpc.cert",
-      "--rpckey=docker/rpc.key"
+      "--rpccert=/go/src/github.com/daglabs/btcd/docker/rpc.cert",
+      "--rpckey=/go/src/github.com/daglabs/btcd/docker/rpc.key"
     ]
     ports: ["18334:18334"]
+
   second:
-    image: 956501169541.dkr.ecr.us-east-1.amazonaws.com/btcd:latest
+    image: btcd:latest
     links: ["first"]
+    security_opt: 
+      - apparmor=unconfined
+    cap_add:
+      - SYS_PTRACE
     command: [
-      "btcd",
+      "./btcd",
       "--testnet",
       "--addrindex",
-      "--connect=first"
+      "--connect=first",
+      "--rpcuser=user",
+      "--rpcpass=pass",
+      "--miningaddr=dagtest:qrm4zaetvny2yuh4wudf8y43fd20lunkxs8quragg8",
+      "--rpclisten=0.0.0.0:18334",
+      "--rpccert=/go/src/github.com/daglabs/btcd/docker/rpc.cert",
+      "--rpckey=/go/src/github.com/daglabs/btcd/docker/rpc.key"
     ]
+    ports: ["18335:18334"]
+
+  second-debug:
+    image: btcd:latest
+    links: ["first"]
+    security_opt: 
+      - apparmor=unconfined
+    cap_add:
+      - SYS_PTRACE
+    command: [
+      "dlv", 
+      "--listen=:40000", 
+      "--api-version=2", 
+      "--headless=true",
+      "exec",
+      "./btcd",
+      "--",
+      # here starts btcd parameters
+      "--testnet",
+      "--addrindex",
+      "--connect=first",
+      "--rpcuser=user",
+      "--rpcpass=pass",
+      "--miningaddr=dagtest:qrm4zaetvny2yuh4wudf8y43fd20lunkxs8quragg8",
+      "--rpclisten=0.0.0.0:18334",
+      "--rpccert=/go/src/github.com/daglabs/btcd/docker/rpc.cert",
+      "--rpckey=/go/src/github.com/daglabs/btcd/docker/rpc.key"
+    ]
+    ports: ["18335:18334", "40000:40000"]

run-dev.sh

@@ -0,0 +1,39 @@
+#!/bin/bash
+
+# This is a short script that compiles the code inside a docker container, and runs two instances connected to each other
+# docker defenition is in docker/Dockerfile.dev
+# instances defenition is in docker/docker-compose.yml
+
+set -e
+
+if [[ $* == *--help* ]]
+then
+	echo "Usage:"
+	echo -e "\t./run-def.sh [--rm] [--debug]"
+	echo ""
+	echo -e "\t--rm\t\tRemove dockers prior to running them, to clear data"
+	echo -e "\t--debug\t\tEnable debugging on second server. Server will not start until debugger is attached"
+	exit
+fi
+
+export SERVICE_NAME=btcd
+export GIT_COMMIT=$(git rev-parse --short=12 HEAD)
+
+docker build -t "${SERVICE_NAME}:${GIT_COMMIT}" . \
+  -f docker/Dockerfile.dev \
+  || fatal 'Failed to build the docker image'
+docker tag "${SERVICE_NAME}:${GIT_COMMIT}" "${SERVICE_NAME}:latest"
+
+cd docker
+
+if [[ $* == *--rm* ]]
+then
+	docker-compose rm -f
+fi
+
+if [[ $* == *--debug* ]]
+then
+	docker-compose up first second-debug
+else
+	docker-compose up first second
+fi