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--- redhat:docker-redhat:start [2019/02/05 13:27] – michael
+++ redhat:docker-redhat:start [2019/12/23 21:52] (current) – [Installation von Docker und Docker-Compose] michael
@@ Line 1: / Line 1: @@
-====== Docker auf RHEL / CentOS 7 ======
+====== Docker auf RHEL / CentOS 7/8 ======
 **In this 3-article series, we will discuss about Docker**, is an ''open-source lightweight virtualization tool'' which runs at top of Operating System level, allowing users to create, run and deploy applications, encapsulated into small containers.
@@ Line 5: / Line 5: @@
 {{:redhat:docker-redhat:docker-generic-banner.jpg?nolink&500|}}
-----
 ===== Installation von Docker und Docker-Compose =====
 <WRAP center box 100%>
-''**Step 1** - Update the System and install Docker:''<code>
+''**Step 1** - Install deps, add docker Repo and setup Docker:''<code>
-# apt-get update
+# yum install -y yum-utils device-mapper-persistent-data lvm2
-# apt-get upgrade
+# yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
+# yum update
+# yum install docker-ce docker-ce-cli --nobest -y
-# apt-get install docker-ce
+# systemctl enable docker --now
 </code>
-''**Step 2** - Install docker-compose binary:''
+''**Step 2** - Install docker-compose binary:'' <code># newest_version="$(curl -s https://api.github.com/repos/docker/compose/releases/latest | grep -Po '"tag_name": "\K.*?(?=")')"
-Neuste Version auf GitHub nachschauen: [[https://github.com/docker/compose/releases|docker-compose]]
+# curl -L "https://github.com/docker/compose/releases/download/${newest_version}/docker-compose-$(uname -s)-$(uname -m)" -o /bin/docker-compose
+# chmod +x /bin/docker-compose
-<code># newest_version="$(curl -s https://api.github.com/repos/docker/compose/releases/latest | grep -Po '"tag_name": "\K.*?(?=")')"
-# curl -L "https://github.com/docker/compose/releases/download/${newest_version}/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
-# chmod +x /usr/local/bin/docker-compose
 # curl -L https://raw.githubusercontent.com/docker/compose/$(docker-compose version --short)/contrib/completion/bash/docker-compose -o /etc/bash_completion.d/docker-compose
@@ Line 37: / Line 35: @@
 <WRAP center box 100%>
-''**Step 1** - Update the System and install Docker:''<code>
+''**Step 1** - Create Project Folder:''<code>
-# apt-get update
+# mkdir /opt/docker-PROJECT
+</code>
+''**Step 2** - Create Project Docker Compose-File:''<code>
+# vim /opt/docker-PROJECT/docker_compose.yml
 </code>
+<wrap em>DEMO - Docker Compose File:</wrap>
+<sxh yaml>
+version: "3.2"
+services:
+  # ----------------------------------------------------------------------------
+  pihole:
+    image: IMAGE/IMAGE:latest
+    container_name: "PROJECT-main"
+    volumes:
+      - /opt/docker-PROJECT/DOCKERHOST/:/etc/CONTAINER/
+      - /etc/localtime:/etc/localtime:ro
+    environment:
+      - VARIABLE1=value_xy
+      - VARIABLE2=value_xy
+    #ports:
+    #  - 53:53/tcp
+    #  - 53:53/udp
+    #  - 67:67/udp
+    #  - 81:80
+    #networks:
+    #  - local
+    restart: always
+    network_mode: "host"
+# ------------------------------------------------------------------------------
+#networks:
+#  local:
+#    driver: bridge
+</sxh>
+''**Step 3** - Start / Stop Docker Compose Projects:''<code>
+# docker-compose -f /opt/docker-PROJECT/docker_compose.yml up -d
+# docker-compose -f /opt/docker-PROJECT/docker_compose.yml down
+</code>
+</WRAP>
+<WRAP center round important 100%>
+''**Enabling access to files protected by SELinux**''
+In order to give a container access to files protected by SELinux, you need to use one of the following volume options: z or Z.
+  * ''**z(lower)**: relabels the content you’re mounting into the container, and makes it shareable between containers.''
+  * ''**Z(upper)**: relabels the content you’re mounting into the container, and makes it private. So, mounting this file in another container won’t work.''
 </WRAP>
+[[http://jaormx.github.io/2018/selinux-and-docker-notes/]]
 ----
@@ Line 73: / Line 122: @@
 https://www.tecmint.com/install-docker-and-learn-containers-in-centos-rhel-7-6/
-<WRAP center round tip 100%>
-**Baseimages: -> RHEL Atomic-Image:**
-  * ''https://access.redhat.com/containers/?tab=overview#/registry.access.redhat.com/rhel7-atomic''
-----
-**Interessante Docker Projekte:**
-  * ''https://github.com/hhktony/wordpress-nginx_rhel7''
-  * ''https://github.com/nextcloud/nextcloudpi''
-</WRAP>