images: add OPCUA image.

Since the OPCUA IOC we use is built alongside the OPCUA module, we can
simply export the IOC image ourselves.

CHANGES.md

@@ -2,10 +2,14 @@
 
 ## Unreleased
 
+A new container image, `ghcr.io/cnpem/opcua-epics-ioc`, is now available.
+
 ### New features
 
 * base: add OPCUA and `ether_ip` IOCs and modules. by @guirodrigueslima in
   https://github.com/cnpem/epics-in-docker/pull/57
+* images: add OPCUA image. by @ericonr in
+  https://github.com/cnpem/epics-in-docker/pull/61
 
 ## v0.7.0
 

images/docker-compose-opcua.yml

@@ -0,0 +1,13 @@
+services:
+  ioc:
+    image: ghcr.io/cnpem/opcua-epics-ioc
+    build:
+      context: ./
+      dockerfile: ../Dockerfile
+      target: no-build
+      labels:
+        org.opencontainers.image.source: https://github.com/cnpem/epics-in-docker
+      args:
+        REPONAME: opcua
+        RUNDIR: /opt/epics/modules/opcua/iocBoot/iocUaDemoServer
+        RUNTIME_PACKAGES: libxml2 libssl1.1