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Dockerfile
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Dockerfile
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FROM kong:2.2.1-alpine
USER root
LABEL authors="Rami Abusereya <rami.abusereya@revomatico.com>,Cristian Chiru <cristian.chiru@revomatico.com>"
ENV PACKAGES="openssl-devel kernel-headers gcc git openssh" \
LUA_BASE_DIR="/usr/local/share/lua/5.1" \
KONG_OIDC_VER="1.2.2-1" \
LUA_RESTY_OIDC_VER="1.7.4-1" \
KONG_PLUGIN_SESSION_VER="2.4.4" \
NGX_DISTRIBUTED_SHM_VER="1.0.2"
RUN set -ex \
&& apk --no-cache add \
libssl1.1 \
openssl \
curl \
unzip \
git \
&& apk --no-cache add --virtual .build-dependencies \
make \
gcc \
openssl-dev \
\
## Install plugins
# Download ngx-distributed-shm dshm library
&& curl -sL https://raw.githubusercontent.com/grrolland/ngx-distributed-shm/${NGX_DISTRIBUTED_SHM_VER}/lua/dshm.lua > ${LUA_BASE_DIR}/resty/dshm.lua \
# Remove old lua-resty-session and dependent kong-plugin-session
&& luarocks remove --force kong-plugin-session \
&& luarocks remove --force lua-resty-session \
# Build kong-plugin-session
&& curl -sL https://raw.githubusercontent.com/Kong/kong-plugin-session/${KONG_PLUGIN_SESSION_VER}/kong-plugin-session-${KONG_PLUGIN_SESSION_VER}-1.rockspec | tee kong-plugin-session-${KONG_PLUGIN_SESSION_VER}-1.rockspec \
&& luarocks build kong-plugin-session-${KONG_PLUGIN_SESSION_VER}-1.rockspec \
# Build kong-oidc from forked repo because is not keeping up with lua-resty-openidc
&& curl -sL https://raw.githubusercontent.com/revomatico/kong-oidc/master/kong-oidc-${KONG_OIDC_VER}.rockspec | tee kong-oidc-${KONG_OIDC_VER}.rockspec | \
sed -E -e 's/(tag =)[^,]+/\1 "master"/' -e "s/(lua-resty-openidc ~>)[^\"]+/\1 ${LUA_RESTY_OIDC_VER}/" > kong-oidc-${KONG_OIDC_VER}.rockspec \
&& luarocks build kong-oidc-${KONG_OIDC_VER}.rockspec \
# Patch nginx_kong.lua for kong-oidc session_secret
&& TPL=${LUA_BASE_DIR}/kong/templates/nginx_kong.lua \
# May cause side effects when using another nginx under this kong, unless set to the same value
&& sed -i "/server_name kong;/a\ \n\
set_decode_base64 \$session_secret \${{X_SESSION_SECRET}};\n" "$TPL" \
# Patch nginx_kong.lua to set dictionaries
&& sed -i -E '/^lua_shared_dict kong\s+.+$/i\ \n\
variables_hash_max_size 2048;\n\
lua_shared_dict discovery \${{X_OIDC_CACHE_DISCOVERY_SIZE}};\n\
lua_shared_dict jwks \${{X_OIDC_CACHE_JWKS_SIZE}};\n\
lua_shared_dict introspection \${{X_OIDC_CACHE_INTROSPECTION_SIZE}};\n\
> if x_session_storage == "shm" then\n\
lua_shared_dict \${{X_SESSION_SHM_STORE}} \${{X_SESSION_SHM_STORE_SIZE}};\n\
> end\n\
' "$TPL" \
# Patch nginx_kong.lua to add for memcached sessions
&& sed -i "/server_name kong;/a\ \n\
## Session:
set \$session_storage \${{X_SESSION_STORAGE}};\n\
set \$session_name \${{X_SESSION_NAME}};\n\
## Session: Memcached specific
set \$session_memcache_connect_timeout \${{X_SESSION_MEMCACHE_CONNECT_TIMEOUT}};\n\
set \$session_memcache_send_timeout \${{X_SESSION_MEMCACHE_SEND_TIMEOUT}};\n\
set \$session_memcache_read_timeout \${{X_SESSION_MEMCACHE_READ_TIMEOUT}};\n\
set \$session_memcache_prefix \${{X_SESSION_MEMCACHE_PREFIX}};\n\
set \$session_memcache_host \${{X_SESSION_MEMCACHE_HOST}};\n\
set \$session_memcache_port \${{X_SESSION_MEMCACHE_PORT}};\n\
set \$session_memcache_uselocking \${{X_SESSION_MEMCACHE_USELOCKING}};\n\
set \$session_memcache_spinlockwait \${{X_SESSION_MEMCACHE_SPINLOCKWAIT}};\n\
set \$session_memcache_maxlockwait \${{X_SESSION_MEMCACHE_MAXLOCKWAIT}};\n\
set \$session_memcache_pool_timeout \${{X_SESSION_MEMCACHE_POOL_TIMEOUT}};\n\
set \$session_memcache_pool_size \${{X_SESSION_MEMCACHE_POOL_SIZE}};\n\
## Session: DHSM specific
set \$session_dshm_region \${{X_SESSION_DSHM_REGION}};\n\
set \$session_dshm_connect_timeout \${{X_SESSION_DSHM_CONNECT_TIMEOUT}};\n\
set \$session_dshm_send_timeout \${{X_SESSION_DSHM_SEND_TIMEOUT}};\n\
set \$session_dshm_read_timeout \${{X_SESSION_DSHM_READ_TIMEOUT}};\n\
set \$session_dshm_host \${{X_SESSION_DSHM_HOST}};\n\
set \$session_dshm_port \${{X_SESSION_DSHM_PORT}};\n\
set \$session_dshm_pool_name \${{X_SESSION_DSHM_POOL_NAME}};\n\
set \$session_dshm_pool_timeout \${{X_SESSION_DSHM_POOL_TIMEOUT}};\n\
set \$session_dshm_pool_size \${{X_SESSION_DSHM_POOL_SIZE}};\n\
set \$session_dshm_pool_backlog \${{X_SESSION_DSHM_POOL_BACKLOG}};\n\
## Session: SHM Specific
set \$session_shm_store \${{X_SESSION_SHM_STORE}};\n\
set \$session_shm_uselocking \${{X_SESSION_SHM_USELOCKING}};\n\
set \$session_shm_lock_exptime \${{X_SESSION_SHM_LOCK_EXPTIME}};\n\
set \$session_shm_lock_timeout \${{X_SESSION_SHM_LOCK_TIMEOUT}};\n\
set \$session_shm_lock_step \${{X_SESSION_SHM_LOCK_STEP}};\n\
set \$session_shm_lock_ratio \${{X_SESSION_SHM_LOCK_RATIO}};\n\
set \$session_shm_lock_max_step \${{X_SESSION_SHM_LOCK_MAX_STEP}};\n\
" "$TPL" \
# Patch kong_defaults.lua to add custom variables that are replaced dynamically in the template above when kong is started
&& TPL=${LUA_BASE_DIR}/kong/templates/kong_defaults.lua \
&& sed -i "/\]\]/i\ \n\
x_session_storage = cookie\n\
x_session_name = oidc_session\n\
x_session_secret = ''\n\
\n\
x_session_memcache_prefix = oidc_sessions\n\
x_session_memcache_connect_timeout = '1000'\n\
x_session_memcache_send_timeout = '1000'\n\
x_session_memcache_read_timeout = '1000'\n\
x_session_memcache_host = memcached\n\
x_session_memcache_port = '11211'\n\
x_session_memcache_uselocking = 'off'\n\
x_session_memcache_spinlockwait = '150'\n\
x_session_memcache_maxlockwait = '30'\n\
x_session_memcache_pool_timeout = '1000'\n\
x_session_memcache_pool_size = '10'\n\
\n\
x_session_dshm_region = oidc_sessions\n\
x_session_dshm_connect_timeout = '1000'\n\
x_session_dshm_send_timeout = '1000'\n\
x_session_dshm_read_timeout = '1000'\n\
x_session_dshm_host = hazelcast\n\
x_session_dshm_port = '4321'\n\
x_session_dshm_pool_name = oidc_sessions\n\
x_session_dshm_pool_timeout = '1000'\n\
x_session_dshm_pool_size = '10'\n\
x_session_dshm_pool_backlog = '10'\n\
\n\
x_session_shm_store_size = 5m\n\
x_session_shm_store = oidc_sessions\n\
x_session_shm_uselocking = off\n\
x_session_shm_lock_exptime = '30'\n\
x_session_shm_lock_timeout = '5'\n\
x_session_shm_lock_step = '0.001'\n\
x_session_shm_lock_ratio = '2'\n\
x_session_shm_lock_max_step = '0.5'\n\
\n\
x_oidc_cache_discovery_size = 128k\n\
x_oidc_cache_jwks_size = 128k\n\
x_oidc_cache_introspection_size = 128k\n\
\n\
" "$TPL" \
## Cleanup
&& rm -fr *.rock* \
&& apk del .build-dependencies 2>/dev/null \
## Create kong and working directory (https://github.com/Kong/kong/issues/2690)
&& mkdir -p /usr/local/kong \
&& chown -R kong:`id -gn kong` /usr/local/kong \
# Allow regular users to run these programs and bind to ports < 1024
&& setcap 'cap_net_bind_service=+ep' /usr/local/bin/kong \
&& setcap 'cap_net_bind_service=+ep' /usr/local/openresty/nginx/sbin/nginx
USER kong