Restructured docker building

I have restructured the docker build process entirely, the binary gets
built outside of the docker build command, now we are managing all
dependencies with real Alpine packages and I have dropped features like
socat or the cron daemon.

Signed-off-by: Thomas Boerger <tboerger@suse.de>

.dockerignore

@@ -1,19 +1,5 @@
-.git
+*
-.git/**
+!docker
-packager
+!bin
-packager/**
+!public
-scripts
+!templates
-scripts/**
-.github/
-.github/**
-config.codekit
-.dockerignore
-*.yml
-*.md
-.bra.toml
-.editorconfig
-.gitignore
-Dockerfile*
-vendor
-vendor/**
-gogs

Dockerfile

@@ -1,22 +1,47 @@
-FROM alpine:3.3
+FROM alpine:edge
-MAINTAINER jp@roemer.im
+MAINTAINER Thomas Boerger <thomas@webhippie.de>
 
-# Install system utils & Gogs runtime dependencies
-ADD https://github.com/tianon/gosu/releases/download/1.9/gosu-amd64 /usr/sbin/gosu
-RUN chmod +x /usr/sbin/gosu \
- && apk --no-cache --no-progress add ca-certificates bash git linux-pam s6 curl openssh socat tzdata
-
-ENV GITEA_CUSTOM /data/gogs
-
-COPY . /app/gogs/
-WORKDIR /app/gogs/
-RUN ./docker/build.sh
-
-# Configure LibC Name Service
-COPY docker/nsswitch.conf /etc/nsswitch.conf
-
-# Configure Docker Container
-VOLUME ["/data"]
 EXPOSE 22 3000
-ENTRYPOINT ["docker/start.sh"]
+
-CMD ["/bin/s6-svscan", "/app/gogs/docker/s6/"]
+RUN echo "@testing http://dl-cdn.alpinelinux.org/alpine/edge/testing" >> /etc/apk/repositories && \
+  apk -U add \
+    gosu@testing \
+    shadow \
+    ca-certificates \
+    sqlite \
+    bash \
+    git \
+    linux-pam \
+    s6 \
+    curl \
+    openssh \
+    tzdata && \
+  rm -rf \
+    /var/cache/apk/* && \
+  groupadd \
+    -r \
+    -g 1000 \
+    git && \
+  useradd \
+    -r -M \
+    -p '*' \
+    -d /data/git \
+    -s /bin/bash \
+    -u 1000 \
+    -g git \
+    git
+
+ENV USER git
+ENV GITEA_CUSTOM /data/gitea
+ENV GODEBUG=netdns=go
+
+VOLUME ["/data"]
+
+ENTRYPOINT ["/usr/bin/entrypoint"]
+CMD ["/bin/s6-svscan", "/etc/s6"]
+
+COPY docker /
+
+COPY public /app/gitea/public
+COPY templates /app/gitea/templates
+COPY bin/gitea /app/gitea/gitea

Dockerfile.rpi

@@ -1,25 +1,47 @@
-FROM hypriot/rpi-alpine-scratch:v3.2
+FROM hypriot/rpi-alpine-scratch:edge
-MAINTAINER jp@roemer.im, raxetul@gmail.com
+MAINTAINER Thomas Boerger <thomas@webhippie.de>
 
-# Install system utils & Gogs runtime dependencies
-ADD https://github.com/tianon/gosu/releases/download/1.9/gosu-armhf /usr/sbin/gosu
-RUN chmod +x /usr/sbin/gosu \
- && echo "http://dl-4.alpinelinux.org/alpine/v3.3/main/"      | tee /etc/apk/repositories    \
- && echo "http://dl-4.alpinelinux.org/alpine/v3.3/community/" | tee -a /etc/apk/repositories \
- && apk -U --no-progress upgrade && rm -f /var/cache/apk/APKINDEX.* \
- && apk --no-cache --no-progress add ca-certificates bash git linux-pam s6 curl openssh socat tzdata
-
-ENV GITEA_CUSTOM /data/gogs
-
-COPY . /app/gogs/
-WORKDIR /app/gogs/
-RUN ./docker/build.sh
-
-# Configure LibC Name Service
-COPY docker/nsswitch.conf /etc/nsswitch.conf
-
-# Configure Docker Container
-VOLUME ["/data"]
 EXPOSE 22 3000
-ENTRYPOINT ["docker/start.sh"]
+
-CMD ["/bin/s6-svscan", "/app/gogs/docker/s6/"]
+RUN echo "@testing http://dl-cdn.alpinelinux.org/alpine/edge/testing" >> /etc/apk/repositories && \
+  apk -U add \
+    gosu@testing \
+    shadow \
+    ca-certificates \
+    sqlite \
+    bash \
+    git \
+    linux-pam \
+    s6 \
+    curl \
+    openssh \
+    tzdata && \
+  rm -rf \
+    /var/cache/apk/* && \
+  groupadd \
+    -r \
+    -g 1000 \
+    git && \
+  useradd \
+    -r -M \
+    -p '*' \
+    -d /data/git \
+    -s /bin/bash \
+    -u 1000 \
+    -g git \
+    git
+
+ENV USER git
+ENV GITEA_CUSTOM /data/gitea
+ENV GODEBUG=netdns=go
+
+VOLUME ["/data"]
+
+ENTRYPOINT ["/usr/bin/entrypoint"]
+CMD ["/bin/s6-svscan", "/etc/s6"]
+
+COPY docker /
+
+COPY public /app/gitea/public
+COPY templates /app/gitea/templates
+COPY bin/gitea /app/gitea/gitea

docker/README.md

@@ -1,111 +0,0 @@
-# Docker for Gogs
-
-Visit [Docker Hub](https://hub.docker.com/r/gogs/) see all available images and tags.
-
-## Usage
-
-To keep your data out of Docker container, we do a volume (`/var/gogs` -> `/data`) here, and you can change it based on your situation.
-
-```
-# Pull image from Docker Hub.
-$ docker pull gogs/gogs
-
-# Create local directory for volume.
-$ mkdir -p /var/gogs
-
-# Use `docker run` for the first time.
-$ docker run --name=gogs -p 10022:22 -p 10080:3000 -v /var/gogs:/data gogs/gogs
-
-# Use `docker start` if you have stopped it.
-$ docker start gogs
-```
-
-Note: It is important to map the Gogs ssh service from the container to the host and set the appropriate SSH Port and URI settings when setting up Gogs for the first time. To access and clone Gogs Git repositories with the above configuration you would use: `git clone ssh://git@hostname:10022/username/myrepo.git` for example.
-
-Files will be store in local path `/var/gogs` in my case.
-
-Directory `/var/gogs` keeps Git repositories and Gogs data:
-
-    /var/gogs
-    |-- git
-    |   |-- gogs-repositories
-    |-- ssh
-    |   |-- # ssh public/private keys for Gogs
-    |-- gogs
-        |-- conf
-        |-- data
-        |-- log
-
-### Volume with data container
-
-If you're more comfortable with mounting data to a data container, the commands you execute at the first time will look like as follows:
-
-```
-# Create data container
-docker run --name=gogs-data --entrypoint /bin/true gogs/gogs
-
-# Use `docker run` for the first time.
-docker run --name=gogs --volumes-from gogs-data -p 10022:22 -p 10080:3000 gogs/gogs
-```
-
-#### Using Docker 1.9 Volume command
-
-```
-# Create docker volume.
-$ docker volume create --name gogs-data
-
-# Use `docker run` for the first time.
-$ docker run --name=gogs -p 10022:22 -p 10080:3000 -v gogs-data:/data gogs/gogs
-```
-
-## Settings
-
-### Application
-
-Most of settings are obvious and easy to understand, but there are some settings can be confusing by running Gogs inside Docker:
-
-- **Repository Root Path**: keep it as default value `/home/git/gogs-repositories` because `start.sh` already made a symbolic link for you.
-- **Run User**: keep it as default value `git` because `start.sh` already setup a user with name `git`.
-- **Domain**: fill in with Docker container IP (e.g. `192.168.99.100`). But if you want to access your Gogs instance from a different physical machine, please fill in with the hostname or IP address of the Docker host machine.
-- **SSH Port**: Use the exposed port from Docker container. For example, your SSH server listens on `22` inside Docker, but you expose it by `10022:22`, then use `10022` for this value. **Builtin SSH server is not recommended inside Docker Container**
-- **HTTP Port**: Use port you want Gogs to listen on inside Docker container. For example, your Gogs listens on `3000` inside Docker, and you expose it by `10080:3000`, but you still use `3000` for this value.
-- **Application URL**: Use combination of **Domain** and **exposed HTTP Port** values (e.g. `http://192.168.99.100:10080/`).
-
-Full documentation of application settings can be found [here](https://gogs.io/docs/advanced/configuration_cheat_sheet.html).
-
-### Container options
-
-This container have some options available via environment variables, these options are opt-in features that can help the administration of this container:
-
-- **SOCAT_LINK**:
-  - <u>Possible value:</u>
-      `true`, `false`, `1`, `0`
-  - <u>Default:</u>
-      `true`
-  - <u>Action:</u>
-      Bind linked docker container to localhost socket using socat.
-      Any exported port from a linked container will be binded to the matching port on localhost.
-  - <u>Disclaimer:</u>
-      As this option rely on the environment variable created by docker when a container is linked, this option should be deactivated in managed environment such as Rancher or Kubernetes (set to `0` or `false`)
-- **RUN_CROND**:
-  - <u>Possible value:</u>
-      `true`, `false`, `1`, `0`
-  - <u>Default:</u>
-      `false`
-  - <u>Action:</u>
-      Request crond to be run inside the container. Its default configuration will periodically run all scripts from `/etc/periodic/${period}` but custom crontabs can be added to `/var/spool/cron/crontabs/`.
-
-## Upgrade
-
-:exclamation::exclamation::exclamation:<span style="color: red">**Make sure you have volumed data to somewhere outside Docker container**</span>:exclamation::exclamation::exclamation:
-
-Steps to upgrade Gogs with Docker:
-
-- `docker pull gogs/gogs`
-- `docker stop gogs`
-- `docker rm gogs`
-- Finally, create container as the first time and don't forget to do same volume and port mapping.
-
-## Known Issues
-
-- The docker container can not currently be build on Raspberry 1 (armv6l) as our base image `alpine` does not have a `go` package available for this platform.

docker/build.sh

@@ -1,36 +0,0 @@
-#!/bin/sh
-set -x
-set -e
-
-# Set temp environment vars
-export GOPATH=/tmp/go
-export PATH=${PATH}:${GOPATH}/bin
-export GO15VENDOREXPERIMENT=1
-
-# Install build deps
-apk --no-cache --no-progress add --virtual build-deps build-base linux-pam-dev go
-
-# Install glide
-git clone -b 0.10.2 https://github.com/Masterminds/glide ${GOPATH}/src/github.com/Masterminds/glide
-cd ${GOPATH}/src/github.com/Masterminds/glide
-make build
-go install
-
-
-
-# Build Gogs
-mkdir -p ${GOPATH}/src/github.com/gogits/
-ln -s /app/gogs/ ${GOPATH}/src/github.com/go-gitea/gitea
-cd ${GOPATH}/src/github.com/go-gitea/gitea
-glide install
-make build TAGS="sqlite cert pam"
-
-# Cleanup GOPATH & vendoring dir
-rm -r $GOPATH /app/gogs/vendor
-
-# Remove build deps
-apk --no-progress del build-deps
-
-# Create git user for Gogs
-adduser -H -D -g 'Gogs Git User' git -h /data/git -s /bin/bash && passwd -u git
-echo "export GITEA_CUSTOM=${GITEA_CUSTOM}" >> /etc/profile

docker/etc/nsswitch.conf

@@ -13,4 +13,3 @@ ethers:         db files
 rpc:            db files
 
 netgroup:       nis
-

docker/etc/profile.d/gitea.sh

@@ -0,0 +1,2 @@
+#!/bin/bash
+export GITEA_CUSTOM=/data/gitea

docker/etc/s6/.s6-svscan/finish

@@ -0,0 +1,2 @@
+#!/bin/bash
+exit 0

docker/etc/s6/gitea/finish

@@ -0,0 +1,2 @@
+#!/bin/bash
+exit 0

docker/etc/s6/gitea/run

@@ -0,0 +1,6 @@
+#!/bin/bash
+[[ -f ./setup ]] && source ./setup
+
+pushd /app/gitea > /dev/null
+    exec gosu git /app/gitea/gitea web
+popd

docker/etc/s6/gitea/setup

@@ -0,0 +1,19 @@
+#!/bin/bash
+
+if [ ! -d /data/git/.ssh ]; then
+    mkdir -p /data/git/.ssh
+    chmod 700 /data/git/.ssh
+fi
+
+if [ ! -f /data/git/.ssh/environment ]; then
+    echo "GITEA_CUSTOM=/data/gitea" >| /data/git/.ssh/environment
+    chmod 600 /data/git/.ssh/environment
+fi
+
+if [ ! -f /data/gitea/conf/app.ini ]; then
+    mkdir -p /data/gitea/conf
+    cp /etc/templates/app.ini /data/gitea/conf/app.ini
+fi
+
+chown -R git:git /data/gitea /app/gitea /data/git
+chmod 0755 /data/gitea /app/gitea /data/git

docker/etc/s6/openssh/finish

@@ -0,0 +1,2 @@
+#!/bin/bash
+exit 0

docker/etc/s6/openssh/run

@@ -0,0 +1,6 @@
+#!/bin/bash
+[[ -f ./setup ]] && source ./setup
+
+pushd /root > /dev/null
+    exec gosu root /usr/sbin/sshd -E /var/log/sshd.log -D
+popd

docker/etc/s6/openssh/setup

@@ -0,0 +1,29 @@
+#!/bin/bash
+
+if [ ! -d /data/ssh ]; then
+    mkdir -p /data/ssh
+fi
+
+if [ ! -f /data/ssh/ssh_host_ed25519_key ]; then
+    echo "Generating /data/ssh/ssh_host_ed25519_key..."
+    ssh-keygen -t ed25519 -b 4096 -f /data/ssh/ssh_host_ed25519_key -N "" > /dev/null
+fi
+
+if [ ! -f /data/ssh/ssh_host_rsa_key ]; then
+    echo "Generating /data/ssh/ssh_host_rsa_key..."
+    ssh-keygen -t rsa -b 2048 -f /data/ssh/ssh_host_rsa_key -N "" > /dev/null
+fi
+
+if [ ! -f /data/ssh/ssh_host_dsa_key ]; then
+    echo "Generating /data/ssh/ssh_host_dsa_key..."
+    ssh-keygen -t dsa -f /data/ssh/ssh_host_dsa_key -N "" > /dev/null
+fi
+
+if [ ! -f /data/ssh/ssh_host_ecdsa_key ]; then
+    echo "Generating /data/ssh/ssh_host_ecdsa_key..."
+    ssh-keygen -t ecdsa -b 256 -f /data/ssh/ssh_host_ecdsa_key -N "" > /dev/null
+fi
+
+chown root:root /data/ssh/*
+chmod 0700 /data/ssh
+chmod 0600 /data/ssh/*

docker/etc/s6/syslogd/finish

@@ -0,0 +1,2 @@
+#!/bin/bash
+exit 0

docker/etc/s6/syslogd/run

@@ -0,0 +1,6 @@
+#!/bin/bash
+[[ -f ./setup ]] && source ./setup
+
+pushd /root > /dev/null
+    exec gosu root /sbin/syslogd -nS -O-
+popd

docker/etc/s6/syslogd/setup

@@ -0,0 +1 @@
+#!/bin/bash

docker/etc/ssh/sshd_config

@@ -1,16 +1,33 @@
 Port 22
+Protocol 2
+
 AddressFamily any
 ListenAddress 0.0.0.0
 ListenAddress ::
-Protocol 2
+
 LogLevel INFO
+
+HostKey /data/ssh/ssh_host_ed25519_key
 HostKey /data/ssh/ssh_host_rsa_key
 HostKey /data/ssh/ssh_host_dsa_key
 HostKey /data/ssh/ssh_host_ecdsa_key
-HostKey /data/ssh/ssh_host_ed25519_key
+
-PermitRootLogin no
 AuthorizedKeysFile .ssh/authorized_keys
-PasswordAuthentication no
+
-UsePrivilegeSeparation no
+UseDNS no
+AllowAgentForwarding no
+AllowTcpForwarding no
+PrintMotd no
+PrintLastLog no
+
 PermitUserEnvironment yes
+PermitRootLogin no
+ChallengeResponseAuthentication no
+PasswordAuthentication no
+PermitEmptyPasswords no
+
 AllowUsers git
+
+Banner none
+Subsystem sftp /usr/lib/ssh/sftp-server
+UsePrivilegeSeparation no

docker/etc/templates/app.ini

@@ -0,0 +1,24 @@
+[repository]
+ROOT = /data/git/repositories
+
+[repository.upload]
+TEMP_PATH = /data/gitea/uploads
+
+[server]
+APP_DATA_PATH = /data/gitea
+
+[database]
+HOST = mysql:3306
+PATH = /data/gitea/gitea.db
+
+[session]
+PROVIDER_CONFIG = /data/gitea/sessions
+
+[picture]
+AVATAR_UPLOAD_PATH = /data/gitea/avatars
+
+[attachment]
+PATH = /data/gitea/attachments
+
+[log]
+ROOT_PATH = /data/gitea/log

docker/s6/.s6-svscan/finish

@@ -1,5 +0,0 @@
-#!/bin/sh
-
-# Cleanup SOCAT services and s6 event folder
-rm -rf $(find /app/gogs/docker/s6/ -name 'event')
-rm -rf /app/gogs/docker/s6/SOCAT_*

docker/s6/crond/run

@@ -1,9 +0,0 @@
-#!/bin/sh
-# Crontabs are located by default in /var/spool/cron/crontabs/
-# The default configuration is also calling all the scripts in /etc/periodic/${period}
-
-if test -f ./setup; then
-    source ./setup
-fi
-
-exec gosu root /usr/sbin/crond -fS

docker/s6/gogs/run

@@ -1,8 +0,0 @@
-#!/bin/sh
-
-if test -f ./setup; then
-    source ./setup
-fi
-
-export USER=git
-exec gosu $USER /app/gogs/gogs web

docker/s6/gogs/setup

@@ -1,23 +0,0 @@
-#!/bin/sh
-
-if ! test -d ~git/.ssh; then
-    mkdir -p ~git/.ssh
-    chmod 700 ~git/.ssh
-fi
-
-if ! test -f ~git/.ssh/environment; then
-    echo "GITEA_CUSTOM=${GITEA_CUSTOM}" > ~git/.ssh/environment
-    chmod 600 ~git/.ssh/environment
-fi
-
-cd /app/gogs
-
-# Link volumed data with app data
-ln -sf /data/gogs/log  ./log
-ln -sf /data/gogs/data ./data
-
-# Backward Compatibility with Gogs Container v0.6.15
-ln -sf /data/git /home/git
-
-chown -R git:git /data /app/gogs ~git/
-chmod 0755 /data /data/gogs ~git/

docker/s6/openssh/run

@@ -1,7 +0,0 @@
-#!/bin/sh
-
-if test -f ./setup; then
-    source ./setup
-fi
-
-exec gosu root /usr/sbin/sshd -D -f /app/gogs/docker/sshd_config

docker/s6/openssh/setup

@@ -1,23 +0,0 @@
-#!/bin/sh
-
-# Check if host keys are present, else create them
-if ! test -f /data/ssh/ssh_host_rsa_key; then
-    ssh-keygen -q -f /data/ssh/ssh_host_rsa_key -N '' -t rsa
-fi
-
-if ! test -f /data/ssh/ssh_host_dsa_key; then
-    ssh-keygen -q -f /data/ssh/ssh_host_dsa_key -N '' -t dsa
-fi
-
-if ! test -f /data/ssh/ssh_host_ecdsa_key; then
-    ssh-keygen -q -f /data/ssh/ssh_host_ecdsa_key -N '' -t ecdsa
-fi
-
-if ! test -f /data/ssh/ssh_host_ed25519_key; then
-    ssh-keygen -q -f /data/ssh/ssh_host_ed25519_key -N '' -t ed25519
-fi
-
-# Set correct right to ssh keys
-chown -R root:root /data/ssh/*
-chmod 0700 /data/ssh
-chmod 0600 /data/ssh/*

docker/s6/syslogd/run

@@ -1,7 +0,0 @@
-#!/bin/sh
-
-if test -f ./setup; then
-    source ./setup
-fi
-
-exec gosu root /sbin/syslogd -nS -O-

docker/start.sh

@@ -1,65 +0,0 @@
-#!/bin/sh
-
-create_socat_links() {
-    # Bind linked docker container to localhost socket using socat
-    USED_PORT="3000:22"
-    while read NAME ADDR PORT; do
-        if test -z "$NAME$ADDR$PORT"; then
-            continue
-        elif echo $USED_PORT | grep -E "(^|:)$PORT($|:)" > /dev/null; then
-            echo "init:socat  | Can't bind linked container ${NAME} to localhost, port ${PORT} already in use" 1>&2
-        else
-            SERV_FOLDER=/app/gogs/docker/s6/SOCAT_${NAME}_${PORT}
-            mkdir -p ${SERV_FOLDER}
-            CMD="socat -ls TCP4-LISTEN:${PORT},fork,reuseaddr TCP4:${ADDR}:${PORT}"
-            echo -e "#!/bin/sh\nexec $CMD" > ${SERV_FOLDER}/run
-            chmod +x ${SERV_FOLDER}/run
-            USED_PORT="${USED_PORT}:${PORT}"
-            echo "init:socat  | Linked container ${NAME} will be binded to localhost on port ${PORT}" 1>&2
-        fi
-    done << EOT
-    $(env | sed -En 's|(.*)_PORT_([0-9]+)_TCP=tcp://(.*):([0-9]+)|\1 \3 \4|p')
-EOT
-}
-
-cleanup() {
-    # Cleanup SOCAT services and s6 event folder
-    # On start and on shutdown in case container has been killed
-    rm -rf $(find /app/gogs/docker/s6/ -name 'event')
-    rm -rf /app/gogs/docker/s6/SOCAT_*
-}
-
-create_volume_subfolder() {
-    # Create VOLUME subfolder
-    for f in /data/gogs/data /data/gogs/conf /data/gogs/log /data/git /data/ssh; do
-        if ! test -d $f; then
-            mkdir -p $f
-        fi
-    done
-}
-
-cleanup
-create_volume_subfolder
-
-LINK=$(echo "$SOCAT_LINK" | tr '[:upper:]' '[:lower:]')
-if [ "$LINK" = "false" -o "$LINK" = "0" ]; then
-    echo "init:socat  | Will not try to create socat links as requested" 1>&2
-else
-    create_socat_links
-fi
-
-CROND=$(echo "$RUN_CROND" | tr '[:upper:]' '[:lower:]')
-if [ "$CROND" = "true" -o "$CROND" = "1" ]; then
-    echo "init:crond  | Cron Daemon (crond) will be run as requested by s6" 1>&2
-    rm -f /app/gogs/docker/s6/crond/down
-else
-    # Tell s6 not to run the crond service
-    touch /app/gogs/docker/s6/crond/down
-fi
-
-# Exec CMD or S6 by default if nothing present
-if [ $# -gt 0 ];then
-    exec "$@"
-else
-    exec /bin/s6-svscan /app/gogs/docker/s6/
-fi

docker/usr/bin/entrypoint

@@ -0,0 +1,11 @@
+#!/bin/sh
+
+for FOLDER in /data/gitea/conf /data/gitea/log /data/git /data/ssh; do
+    mkdir -p ${FOLDER}
+done
+
+if [ $# -gt 0 ]; then
+    exec "$@"
+else
+    exec /bin/s6-svscan /etc/s6
+fi